Refer to the mapping illustrated below. Assume that the mapplet definition is valid and that the individual transformation expressions are valid. Select the statement that is correct.
Choose Answer
(A)
The mapping will be valid as it is.
(B)
The mapping is valid because the third mapplet output group, Update Changes, does not have any output ports connected to a transformation or Target definition.
(C)
The mapping is invalid because you cannot concatenate two or more data flow paths together into one mapplet input group.
(D)
The mapplet is invalid because the number of output ports in each output group does not match.
Saturday, November 17, 2007
Input transformation in mapplet
Select the statement below that is true.
Choose Answer
(A)
A mapplet that does not contain an Input transformation is always an active mapplet.
(B)
A mapplet that does not contain an Input transformation is an active mapplet only if it contains at least one active transformation.
(C)
A passive mapplet can be made into an active mapplet by adding one or more Joiner transformations to the mapplet.
(D)
A passive mapplet can be made into an active mapplet by adding one or more Lookup transformations to the mapplet.
Choose Answer
(A)
A mapplet that does not contain an Input transformation is always an active mapplet.
(B)
A mapplet that does not contain an Input transformation is an active mapplet only if it contains at least one active transformation.
(C)
A passive mapplet can be made into an active mapplet by adding one or more Joiner transformations to the mapplet.
(D)
A passive mapplet can be made into an active mapplet by adding one or more Lookup transformations to the mapplet.
Output transformations in a mapplet
How many Output transformations can be placed in a mapplet?
Choose Answer
(A)
One
(B)
One or more
(C)
One or more unless there is at least one Target definition in the mapplet, in which case zero Output transformations are permitted.
(D)
Any number
Choose Answer
(A)
One
(B)
One or more
(C)
One or more unless there is at least one Target definition in the mapplet, in which case zero Output transformations are permitted.
(D)
Any number
Homogeneous Source Definitions
How many homogeneous Source Definitions can be placed in a Mapplet?
Choose Answer
(A)
One
(B)
One for each Source Qualifier transformation.
(C)
Zero to one if the mapplet does not contain an Input or ERP Source Qualifier transformation.
(D)
Unlimited
Choose Answer
(A)
One
(B)
One for each Source Qualifier transformation.
(C)
Zero to one if the mapplet does not contain an Input or ERP Source Qualifier transformation.
(D)
Unlimited
Difference between the Router and Filter transformations
A major difference between the Router and Filter transformations is that filtered rows can be captured in the Router. (T/F)
Choose Answer
(A)
True
(B)
False
Choose Answer
(A)
True
(B)
False
Filter transformation
A Filter transformation contains the following condition: ITEM_COST > 100.00. The value for ITEM_COST for a specific row is 35. What will happen to that row?
Choose Answer
(A)
It is dropped from the mapping flow.
(B)
It is dropped from the mapping flow and written to the appropriate reject (bad) file.
(C)
It is dropped from the mapping flow and written to the appropriate reject (bad) file if the Filter property "Forward Filtered Rows" is set to True.
(D)
If the Filter property "Forward Filtered Rows" is set to True, the row is sent to downstream transformations, if any, but not written to the target table.
Choose Answer
(A)
It is dropped from the mapping flow.
(B)
It is dropped from the mapping flow and written to the appropriate reject (bad) file.
(C)
It is dropped from the mapping flow and written to the appropriate reject (bad) file if the Filter property "Forward Filtered Rows" is set to True.
(D)
If the Filter property "Forward Filtered Rows" is set to True, the row is sent to downstream transformations, if any, but not written to the target table.
Router transformation that has three groups defined
Specify which statement below best describes the behavior of a Router transformation that has three groups defined.
Choose Answer
(A)
The condition for each group will be evaluated for each row, and the first group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports.
(B)
The condition for each group will be evaluated for each row, and each group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports.
(C)
The condition for each group will be evaluated for each row, and the first group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports only if those ports are connected to another transformation.
(D)
The condition for each group will be evaluated for each row, and each group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports only if those ports are connected to another transformation.
Choose Answer
(A)
The condition for each group will be evaluated for each row, and the first group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports.
(B)
The condition for each group will be evaluated for each row, and each group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports.
(C)
The condition for each group will be evaluated for each row, and the first group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports only if those ports are connected to another transformation.
(D)
The condition for each group will be evaluated for each row, and each group that evaluates to a "true" result will pass the row out of the transformation through that group's output ports. If no group evaluates to a "true" result, the row will pass out of the transformation through the Default group output ports only if those ports are connected to another transformation.
Update Strategy transformation
It is desired to run a session where every row that is processed by the session updates the target table based on the primary key value. Assume that the target table definition has a primary key, and all other session and mapping properties are left to their defaults. Select the statement below that is true.
Choose Answer
(A)
The only action that is necessary is to set the Treat Source Rows As session property to Update.
(B)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table.
(C)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table, and the Treat Source Rows As session property must be set to Update.
(D)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table, and the Treat Source Rows As session property must be set to Data Driven.
Choose Answer
(A)
The only action that is necessary is to set the Treat Source Rows As session property to Update.
(B)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table.
(C)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table, and the Treat Source Rows As session property must be set to Update.
(D)
At least one Update Strategy transformation must be present in the mapping, and the update expression condition must be written to be true for all rows that are desired to update the target table, and the Treat Source Rows As session property must be set to Data Driven.
Expressions used in an Update Strategy
What type of expressions can be used in an Update Strategy transformation?
Choose Answer
(A)
Immediate If ( IIF)
(B)
Immediate If (IIF) or DECODE
(C)
Immediate If (IIF), DECODE, or IF THEN ELSE
(D)
Any valid non-aggregate expression that is supported by the transformation language.
Choose Answer
(A)
Immediate If ( IIF)
(B)
Immediate If (IIF) or DECODE
(C)
Immediate If (IIF), DECODE, or IF THEN ELSE
(D)
Any valid non-aggregate expression that is supported by the transformation language.
Forward Rejected Rows in Update Strategy
Refer to the diagram below. The Update Strategy transformation contains an expression that may tag each row as insert, delete or reject. It is desired to count ALL rows that pass through the Aggregator, regardless of how they are tagged. Assume that the other parts of the mapping are finished and that the Update Strategy transformation property Forward Rejected Rows is set to True. Select the statement that is true.
Choose Answer
(A)
The mapping will work as desired without any further changes.
(B)
The mapping will work as desired only if the Aggregator transformation is moved to be upstream of the Update Strategy transformation.
(C)
The mapping will work as desired only if it is redesigned to use a Router transformation in place of the Update Strategy transformation, and the row operation for each row (insert, delete, or reject) is set by an individual Update Strategy transformation for each flow, and then counted by an individual Aggregator transformation for each flow.
(D)
The mapping will work as desired only if the Update Strategy transformation tags each row only as insert or delete (no rows tagged as reject). Any rows that are not desired in the target table can then be removed from the flow by adding a Filter transformation DOWNSTREAM of the Aggregator transformation, and setting the Filter condition to be logically equivalent to the condition that was used in the Update Strategy transformation to tag the rows as reject.
Choose Answer
(A)
The mapping will work as desired without any further changes.
(B)
The mapping will work as desired only if the Aggregator transformation is moved to be upstream of the Update Strategy transformation.
(C)
The mapping will work as desired only if it is redesigned to use a Router transformation in place of the Update Strategy transformation, and the row operation for each row (insert, delete, or reject) is set by an individual Update Strategy transformation for each flow, and then counted by an individual Aggregator transformation for each flow.
(D)
The mapping will work as desired only if the Update Strategy transformation tags each row only as insert or delete (no rows tagged as reject). Any rows that are not desired in the target table can then be removed from the flow by adding a Filter transformation DOWNSTREAM of the Aggregator transformation, and setting the Filter condition to be logically equivalent to the condition that was used in the Update Strategy transformation to tag the rows as reject.
"Treat source rows as" session property
A user sets the "Treat source rows as" session property to "Update". What is the effect of making this selection?
Choose Answer
(A)
All records processed by the session will be treated as update statements on the target table(s).
(B)
All records processed by the session will be treated as update statements on the target table(s), provided that a primary key constraint exists on the corresponding target table definition(s).
(C)
This selection allows the use of the Update Strategy transformation, provided that one or more Update Strategy transformations are present in the mapping run by the session.
(D)
This selection allows the use of the Update Strategy transformation, provided that one or more Update Strategy transformations are present in the mapping run by the session, and provided that a primary key constraint exists on the corresponding target table definition(s).
Choose Answer
(A)
All records processed by the session will be treated as update statements on the target table(s).
(B)
All records processed by the session will be treated as update statements on the target table(s), provided that a primary key constraint exists on the corresponding target table definition(s).
(C)
This selection allows the use of the Update Strategy transformation, provided that one or more Update Strategy transformations are present in the mapping run by the session.
(D)
This selection allows the use of the Update Strategy transformation, provided that one or more Update Strategy transformations are present in the mapping run by the session, and provided that a primary key constraint exists on the corresponding target table definition(s).
Case-sensitive string comparison
Can the Joiner transformation perform a case-sensitive string comparison as part of the join condition?
Choose Answer
(A)
Yes, always
(B)
No, the comparison is never case sensitive.
(C)
Yes when the Informatica server is running on the Unix operating system, no when it is running on a Windows operating system.
(D)
Yes, when the database that is being used for the join supports case-sensitive string comparisons.
Choose Answer
(A)
Yes, always
(B)
No, the comparison is never case sensitive.
(C)
Yes when the Informatica server is running on the Unix operating system, no when it is running on a Windows operating system.
(D)
Yes, when the database that is being used for the join supports case-sensitive string comparisons.
Full outer join
A developer is using a Joiner transformation to join two data streams (sources), and a full outer join is desired. Select the statement below that is true.
Choose Answer
(A)
A Joiner transformations may perform a full outer join under all conditions.
(B)
A Joiner transformation may perform a full outer join only when one or more sides of the join are from a relational database.
(C)
A Joiner transformation may perform a full outer join only when all sides of the join originate from relational databases, and one or more of those databases support outer joins.
(D)
A Joiner transformation may perform a full outer join only when no file sources are involved in the join (both sides are relational).
Choose Answer
(A)
A Joiner transformations may perform a full outer join under all conditions.
(B)
A Joiner transformation may perform a full outer join only when one or more sides of the join are from a relational database.
(C)
A Joiner transformation may perform a full outer join only when all sides of the join originate from relational databases, and one or more of those databases support outer joins.
(D)
A Joiner transformation may perform a full outer join only when no file sources are involved in the join (both sides are relational).
3 or more data sources connected to a Joiner
Choose Answer
(A)
The mapping is valid as it is.
(B)
The mapping is invalid because there is an active transformation between SQ_ITEMS and the Joiner transformation. If the Aggregator transformation was eliminated or replaced with a passive transformation, the mapping would be valid.
(C)
The mapping is valid only if the SQ_ITEMS side of the join is designated as the master side in the Joiner transformation.
(D)
The mapping is invalid because it is not permitted to have three or more data sources connected to a Joiner transformation under any circumstances.
(A)
The mapping is valid as it is.
(B)
The mapping is invalid because there is an active transformation between SQ_ITEMS and the Joiner transformation. If the Aggregator transformation was eliminated or replaced with a passive transformation, the mapping would be valid.
(C)
The mapping is valid only if the SQ_ITEMS side of the join is designated as the master side in the Joiner transformation.
(D)
The mapping is invalid because it is not permitted to have three or more data sources connected to a Joiner transformation under any circumstances.
Joiner
Refer to the diagram below, which shows part of a mapping. Assume that each individual transformation and transformation expression in the mapping is valid, and that the part of the mapping that is not visible (downstream of the Joiner) is valid. Select the statement that is true.
Choose Answer
(A)
The mapping is valid as it is.
(B)
The mapping is invalid because a Joiner transformation must be the first transformation after the Source Qualifier, and in this mapping there are two transformations between SQ_ITEMS and the Joiner transformation.
(C)
The mapping will be valid only if the SQ_ITEMS side of the join is designated as the detail side in the Joiner transformation.
(D)
The mapping will be valid only if the SQ_ITEMS side of the join is designated as the master side in the Joiner transformation.
Refer to the diagram below, which shows part of a mapping. Assume that each individual transformation and transformation expression is valid. Select the statement that is true.
Choose Answer
(A)
The mapping is valid as it is.
(B)
The mapping is invalid because a Joiner transformation must be the first transformation after the Source Qualifier, and in this mapping there are two transformations between SQ_ITEMS and the Joiner transformation.
(C)
The mapping will be valid only if the SQ_ITEMS side of the join is designated as the detail side in the Joiner transformation.
(D)
The mapping will be valid only if the SQ_ITEMS side of the join is designated as the master side in the Joiner transformation.
Refer to the diagram below, which shows part of a mapping. Assume that each individual transformation and transformation expression is valid. Select the statement that is true.
Joiner transformations
It is desired to join together a database table, a flat file and an XML file. All three sources have a single common field called CUSTOMER_ID. What is the minimum number of Joiner transformations that are needed to join these sources?
Choose Answer
(A)
One
(B)
Two
(C)
Three
(D)
One if the flat file and the XML file are located in the same directory, two if they are located in different directories.
Choose Answer
(A)
One
(B)
Two
(C)
Three
(D)
One if the flat file and the XML file are located in the same directory, two if they are located in different directories.
Set a Lookup condition
A developer is attempting to set a Lookup condition and finds that the New Condition button is disabled, making it impossible to set a condition. Assume that it is a connected Lookup. What is a possible reason for this?
Choose Answer
(A)
There are no designated Lookup ports in the ports tab section.
(B)
There are no designated Input ports in the ports tab section.
(C)
There are no ports with compatible data types.
(D)
At least one Output port has not been connected to another transformation.
Choose Answer
(A)
There are no designated Lookup ports in the ports tab section.
(B)
There are no designated Input ports in the ports tab section.
(C)
There are no ports with compatible data types.
(D)
At least one Output port has not been connected to another transformation.
Override the SQL of a non-shared, uncached Lookup transformation
It is desired to override the SQL of a non-shared, uncached Lookup transformation in order to add a WHERE clause. Select the action below that MUST be taken to allow the session to run as designed. Assume that the session has already been tested prior to the override and it is satisfactory.
Choose Answer
(A)
Cache the Lookup
(B)
Include an ORDER BY clause in the SQL that sorts the lookup field(s) in descending order.
(C)
Generate a default query after the override SQL has been entered.
(D)
Validate the override SQL on the actual database table.
Choose Answer
(A)
Cache the Lookup
(B)
Include an ORDER BY clause in the SQL that sorts the lookup field(s) in descending order.
(C)
Generate a default query after the override SQL has been entered.
(D)
Validate the override SQL on the actual database table.
Lookup transformation where cache is persistent
Select the Lookup transformation scenario below which is not supported. Assume that the Lookup cache is persistent, it is shared and named, and there is only one Lookup transformation used in the mapping or mapplet.
Choose Answer
(A)
Static cacheCondition: sales_amt > sales_amt1Unconnected
(B)
Static cacheCondition: sales_amt = sales_amt1 Unconnected
(C)
Dynamic cacheCondition: sales_amt > sales_amt1Connected
(D)
Dynamic cacheCondition: sales_amt = sales_amt1Connected
Choose Answer
(A)
Static cacheCondition: sales_amt > sales_amt1Unconnected
(B)
Static cacheCondition: sales_amt = sales_amt1 Unconnected
(C)
Dynamic cacheCondition: sales_amt > sales_amt1Connected
(D)
Dynamic cacheCondition: sales_amt = sales_amt1Connected
Dynamic lookup cache
Select the statement below that most accurately describes how a dynamic lookup cache is designed to function.
Choose Answer
(A)
The Informatica server compares the target data to the cache data as each row is passed to the target and updates the cache as required.
(B)
The Informatica server inserts rows into the cache or updates rows in the cache as it passes rows to the target.
(C)
The Informatica server updates the cache as the target table data changes.
(D)
The Informatica server inserts, updates or deletes rows in the cache as it passes rows to the target.
Choose Answer
(A)
The Informatica server compares the target data to the cache data as each row is passed to the target and updates the cache as required.
(B)
The Informatica server inserts rows into the cache or updates rows in the cache as it passes rows to the target.
(C)
The Informatica server updates the cache as the target table data changes.
(D)
The Informatica server inserts, updates or deletes rows in the cache as it passes rows to the target.
Source Type Lookup transformation
What type of data sources are supported in the Source Type Lookup transformation property?
Choose Answer
(A)
Database
(B)
Database and flat file
(C)
Database, flat file, and COBOL file
(D)
Database, flat file, COBOL file, and XML file
Choose Answer
(A)
Database
(B)
Database and flat file
(C)
Database, flat file, and COBOL file
(D)
Database, flat file, COBOL file, and XML file
Unconnected Lookup transformation
What is one disadvantage of using an unconnected (sometimes called function mode) Lookup transformation?
Choose Answer
(A)
If there is no match in the Lookup condition, the Informatica server returns a transformation error.
(B)
A reusable unconnected Lookup can not have more than one instance in a mapping.
(C)
An unconnected Lookup transformation does not support user-defined default values.
(D)
An unconnected Lookup transformation does not support a static lookup cache.
Choose Answer
(A)
If there is no match in the Lookup condition, the Informatica server returns a transformation error.
(B)
A reusable unconnected Lookup can not have more than one instance in a mapping.
(C)
An unconnected Lookup transformation does not support user-defined default values.
(D)
An unconnected Lookup transformation does not support a static lookup cache.
NEXTVAL port of a Sequence Generator
Can the NEXTVAL port of a Sequence Generator transformation be connected to the PRIMARY KEY column of two different target table definitions in a mapping? Assume that the two definitions represent different physical tables on the database server.
Choose Answer
(A)
Yes, always.
(B)
Yes, but only if the two tables share a primary - foreign key (referential integrity) relationship.
(C)
No, because the Sequence Generator produces unique values (within the selected range) and this would result in a unique constraint error (duplicate key values) in one or both of the tables.
(D)
No, this is not allowed in the Mapping Designer.
Choose Answer
(A)
Yes, always.
(B)
Yes, but only if the two tables share a primary - foreign key (referential integrity) relationship.
(C)
No, because the Sequence Generator produces unique values (within the selected range) and this would result in a unique constraint error (duplicate key values) in one or both of the tables.
(D)
No, this is not allowed in the Mapping Designer.
Sequence Generator transformation
What is the difference between the NEXTVAL and the CURRVAL ports of the Sequence Generator transformation? Assume that they are both connected to the input ports of another transformation.
Choose Answer
(A)
The Informatica server generates a sequence of numbers for NEXTVAL, and CURRVAL is set to NEXTVAL plus one.
(B)
The Informatica server generates a sequence of numbers for NEXTVAL, and CURRVAL is set to NEXTVAL minus one.
(C)
The Informatica server generates a sequence of numbers for CURVALL, and NEXTVAL is set to CURRVAL plus one.
(D)
The Informatica server generates a sequence of numbers for CURVALL, and NEXTVAL is set to CURRVAL plus the integer value set for the "Increment By" Sequence Generator property.
Choose Answer
(A)
The Informatica server generates a sequence of numbers for NEXTVAL, and CURRVAL is set to NEXTVAL plus one.
(B)
The Informatica server generates a sequence of numbers for NEXTVAL, and CURRVAL is set to NEXTVAL minus one.
(C)
The Informatica server generates a sequence of numbers for CURVALL, and NEXTVAL is set to CURRVAL plus one.
(D)
The Informatica server generates a sequence of numbers for CURVALL, and NEXTVAL is set to CURRVAL plus the integer value set for the "Increment By" Sequence Generator property.
Active transformations
Why is the sorter transformation considered an active transformation?
Choose Answer
(A)
When the Case Sensitive property is set to true (checked), rows that do not meet the case criteria in the sort may be discarded.
(B)
When more than one sort key is selected, nested sorts may result in a single input row being outputted more than one time within multiple sort sequences.
(C)
When the Distinct Output Rows property is set to true (checked), duplicate rows are discarded.
(D)
When the sort direction properties are not the same for all sort keys (not all ascending or all descending), a single input row may be outputted more than one time.
Choose Answer
(A)
When the Case Sensitive property is set to true (checked), rows that do not meet the case criteria in the sort may be discarded.
(B)
When more than one sort key is selected, nested sorts may result in a single input row being outputted more than one time within multiple sort sequences.
(C)
When the Distinct Output Rows property is set to true (checked), duplicate rows are discarded.
(D)
When the sort direction properties are not the same for all sort keys (not all ascending or all descending), a single input row may be outputted more than one time.
Sort a very large data set
When using the sorter transformation to sort a very large data set, additional RAM resources may be required to accommodate the data. Which machine would provide this RAM?
Choose Answer
(A)
The Informatica server machine.
(B)
The source database server machine.
(C)
The target database server machine.
(D)
The source database server machine when reading from a relational source, or the target database server machine when reading from a flat file, COBOL or XML source.
Choose Answer
(A)
The Informatica server machine.
(B)
The source database server machine.
(C)
The target database server machine.
(D)
The source database server machine when reading from a relational source, or the target database server machine when reading from a flat file, COBOL or XML source.
Sorter transformation
When a sorter transformation is included in a Mapping that is run in a Workflow, when does the data sort occur?
Choose Answer
(A)
Before the Workflow runs.
(B)
After the Workflow runs.
(C)
Either before or after the Workflow runs, depending on the sorter properties.
(D)
During the time the Workflow runs (Session Task run time).
Choose Answer
(A)
Before the Workflow runs.
(B)
After the Workflow runs.
(C)
Either before or after the Workflow runs, depending on the sorter properties.
(D)
During the time the Workflow runs (Session Task run time).
Sorter transformation
Select the statement below that is true.
Choose Answer
(A)
The Sorter transformation must be used immediately downstream of a Source Qualifier transformation.
(B)
The Sorter transformation must be used immediately downstream of a Source Qualifier transformation that reads from a relational source.
(C)
The Sorter transformation supports multiple sort levels, so any sort key can have a secondary sort associated with it.
(D)
The user is allowed to modify the ORDER BY clause generated by the Sorter transformation.
Choose Answer
(A)
The Sorter transformation must be used immediately downstream of a Source Qualifier transformation.
(B)
The Sorter transformation must be used immediately downstream of a Source Qualifier transformation that reads from a relational source.
(C)
The Sorter transformation supports multiple sort levels, so any sort key can have a secondary sort associated with it.
(D)
The user is allowed to modify the ORDER BY clause generated by the Sorter transformation.
Aggregator data RAM cache
By default, the Aggregator data RAM cache size is 2 Mbytes, and the index RAM cache is 1 Mbyte. What would happen if a user ran a session that required a data RAM cache of 3 Mbytes and the data cache size was left at the default?
Choose Answer
(A)
The session would fail when the Aggregator begins processing data.
(B)
The session would fail when the data RAM cache exceeds 2 Mbytes.
(C)
The Informatica server would automatically expand the data RAM cache to accommodate the additional data (provided the RAM is available on the machine).
(D)
The Informatica server would automatically page the data to a file on the local disk.
Choose Answer
(A)
The session would fail when the Aggregator begins processing data.
(B)
The session would fail when the data RAM cache exceeds 2 Mbytes.
(C)
The Informatica server would automatically expand the data RAM cache to accommodate the additional data (provided the RAM is available on the machine).
(D)
The Informatica server would automatically page the data to a file on the local disk.
Aggregator data cache size.
An Aggregator transformation will process 50 million rows per session, and the width of each row is 3 KBytes. There are two group-by ports, MONTH and CUSTOMER. Assuming that the data set contains two years worth of data, and that there are 500 customers who are represented for each month in the data set, estimate the required data cache size.
Choose Answer
(A)
6 MBytes
(B)
12 MBytes
(C)
18 MBytes
(D)
36 MBytes
Choose Answer
(A)
6 MBytes
(B)
12 MBytes
(C)
18 MBytes
(D)
36 MBytes
Aggregate cache
The aggregate cache always consists of
Choose Answer
(A)
An index and data cache in RAM, and an index and data file on the local disk.
(B)
An index and data cache in RAM, and an index and data cache on the local disk if the RAM caches cannot contain all of the intermediate results in the data set.
(C)
An index and data cache in RAM, and an index and data file on the local disk if the file names and directory (or Server Variable) have been specified as an Aggregator property.
(D)
An index and data cache in RAM, and an index and data file on the local disk if the Incremental Aggregation property has been set to true when the session runs.
Choose Answer
(A)
An index and data cache in RAM, and an index and data file on the local disk.
(B)
An index and data cache in RAM, and an index and data cache on the local disk if the RAM caches cannot contain all of the intermediate results in the data set.
(C)
An index and data cache in RAM, and an index and data file on the local disk if the file names and directory (or Server Variable) have been specified as an Aggregator property.
(D)
An index and data cache in RAM, and an index and data file on the local disk if the Incremental Aggregation property has been set to true when the session runs.
Sorted Input in Aggregator transformation
An Aggregator transformation has two group-by ports: CUSTOMER_ID and ORDER_DATE, in that order. The Sorted Input property is set to true. The Order By clause in the SQL for the Source Qualifier contains this syntax: ORDER BY CUSTOMER_ID, ORDER_DATE, MANF_ID. Assuming that the sort order on the database server matches the sort order of the session and everything else is valid, what would happen when this session started?
Choose Answer
(A)
The session would run normally.
(B)
The session would fail, because the columns in the ORDER BY clause in the SQL do not exactly match the group-by ports in the Aggregator transformation.
(C)
The session would fail, because when the Sorted Input property is set to true, no more than one group-by port is allowed.
(D)
The session would run, but sorted data would not be used because the columns in the ORDER BY clause in the SQL does not exactly match the group-by ports in the Aggregator transformation, and this may adversely affect performance.
Choose Answer
(A)
The session would run normally.
(B)
The session would fail, because the columns in the ORDER BY clause in the SQL do not exactly match the group-by ports in the Aggregator transformation.
(C)
The session would fail, because when the Sorted Input property is set to true, no more than one group-by port is allowed.
(D)
The session would run, but sorted data would not be used because the columns in the ORDER BY clause in the SQL does not exactly match the group-by ports in the Aggregator transformation, and this may adversely affect performance.
Aggregator transformation variable port
What type of expressions can be used in an Aggregator transformation variable port?
Choose Answer
(A)
Aggregate or non-aggregate expressions, provided they are not used together in a single variable port.
(B)
Aggregate and non-aggregate expressions, together in the same variable port.
(C)
Aggregate, non-aggregate and conditional expressions, together in the same variable port, provided that the variable port is also made a "group-by" port.
(D)
Non-aggregate and conditional expressions only.
Choose Answer
(A)
Aggregate or non-aggregate expressions, provided they are not used together in a single variable port.
(B)
Aggregate and non-aggregate expressions, together in the same variable port.
(C)
Aggregate, non-aggregate and conditional expressions, together in the same variable port, provided that the variable port is also made a "group-by" port.
(D)
Non-aggregate and conditional expressions only.
Aggregator transformation
What type of expressions can be used in an Aggregator transformation output port?
Choose Answer
(A)
Aggregate or non-aggregate expressions, provided they are not used together in a single output port.
(B)
Aggregate and non-aggregate expressions, together in the same output port.
(C)
Aggregate, non-aggregate and conditional expressions, together in the same output port.
(D)
Aggregate only.
Choose Answer
(A)
Aggregate or non-aggregate expressions, provided they are not used together in a single output port.
(B)
Aggregate and non-aggregate expressions, together in the same output port.
(C)
Aggregate, non-aggregate and conditional expressions, together in the same output port.
(D)
Aggregate only.
Outer join
Can a Source Qualifier be used to perform an outer join when joining two database tables?
Choose Answer
(A)
Yes, but it requires that the user modify the join SQL by hand.
(B)
Yes, but it requires that the user select left or right outer join as the Source Qualifier Join Type property.
(C)
No, because this may produce null values in ports and the Source Qualifier does not support default values.
(D)
No, this function is not supported by the Source Qualifier- a Joiner transformation would need to be used.
Choose Answer
(A)
Yes, but it requires that the user modify the join SQL by hand.
(B)
Yes, but it requires that the user select left or right outer join as the Source Qualifier Join Type property.
(C)
No, because this may produce null values in ports and the Source Qualifier does not support default values.
(D)
No, this function is not supported by the Source Qualifier- a Joiner transformation would need to be used.
Join two relational sources
A user desires to join two relational sources with a single Source Qualifier. The sources and the Source Qualifier have been correctly imported into the mapping. Next, she must establish a primary / foreign key relationship between two ports in the source definitions. Assuming that the relationship does not currently exist on the database server, what are the required steps to do this?
Choose Answer
(A)
Use the Source Analyzer to establish the primary / foreign key relationship and save the repository.
(B)
Use the Source Analyzer to establish the primary / foreign key relationship, save the repository, and run the appropriate SQL statement on the database tables to create the actual primary / foreign key relationship.
(C)
Use the Source Analyzer to establish the primary / foreign key relationship, open the SQL Editor in the Source Qualifier and generate the join statement, modify the join statement if required, and save the repository.
(D)
Use the Source Analyzer to establish the primary / foreign key relationship, regenerate the Source Qualifier SQL using the SQL Editor, press the Okay button, and save the repository.
Choose Answer
(A)
Use the Source Analyzer to establish the primary / foreign key relationship and save the repository.
(B)
Use the Source Analyzer to establish the primary / foreign key relationship, save the repository, and run the appropriate SQL statement on the database tables to create the actual primary / foreign key relationship.
(C)
Use the Source Analyzer to establish the primary / foreign key relationship, open the SQL Editor in the Source Qualifier and generate the join statement, modify the join statement if required, and save the repository.
(D)
Use the Source Analyzer to establish the primary / foreign key relationship, regenerate the Source Qualifier SQL using the SQL Editor, press the Okay button, and save the repository.
Data source(s)
What type of data source(s) can be read with the Source Qualifier transformation?
Choose Answer
(A)
Relational databases
(B)
Relational databases and flat files
(C)
Relational databases, flat files and Cobol
(D)
Relational databases, flat files, Cobol and certified ERP sources such a Peoplesoft and SAP/R3.
Choose Answer
(A)
Relational databases
(B)
Relational databases and flat files
(C)
Relational databases, flat files and Cobol
(D)
Relational databases, flat files, Cobol and certified ERP sources such a Peoplesoft and SAP/R3.
Override the default Source Qualifier join
Under what circumstances should a user override the default Source Qualifier join?
Choose Answer
(A)
The datatypes of the columns used in the join condition do not match.
(B)
The Source Qualifier is being used to join two tables located on different database servers (a heterogeneous join).
(C)
The Source Qualifier is being used to join two or more flat files.
(D)
The order of the Source Qualifier ports has been changed since the mapping was first saved.
Choose Answer
(A)
The datatypes of the columns used in the join condition do not match.
(B)
The Source Qualifier is being used to join two tables located on different database servers (a heterogeneous join).
(C)
The Source Qualifier is being used to join two or more flat files.
(D)
The order of the Source Qualifier ports has been changed since the mapping was first saved.
Generate a default query
A user finds that she is unable to generate a default query in the Source Qualifier SQL Editor. What is a possible reason for that?
Choose Answer
(A)
The datatypes in the Source Qualifier do not match the corresponding datatypes in the source definition(s) for each field and port.
(B)
The Source Qualifier does not have one or more ports connected to another transformation or target in the mapping.
(C)
The Source Qualifier property "Allow default query" is unchecked (set to false).
(D)
The Source Qualifier is not connected to the source database.
Choose Answer
(A)
The datatypes in the Source Qualifier do not match the corresponding datatypes in the source definition(s) for each field and port.
(B)
The Source Qualifier does not have one or more ports connected to another transformation or target in the mapping.
(C)
The Source Qualifier property "Allow default query" is unchecked (set to false).
(D)
The Source Qualifier is not connected to the source database.
Alter the datatypes in the Source Qualifier
Under what circumstances is it desirable to alter the datatypes in the Source Qualifier?
Choose Answer
(A)
When the precision required by the mapping is less than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(B)
When the precision required by the mapping is greater than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(C)
To alter the way the source database binds data when it is imported into the mapping.
(D)
Never. The datatypes in the Source Qualifier and the corresponding source(s) must match.
Choose Answer
(A)
When the precision required by the mapping is less than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(B)
When the precision required by the mapping is greater than the precision of the data stored in the table or flat file being read by the Source Qualifier.
(C)
To alter the way the source database binds data when it is imported into the mapping.
(D)
Never. The datatypes in the Source Qualifier and the corresponding source(s) must match.
Informatica expression reserved word
Can a port in an Expression transformation be given the name DISTINCT ?
Choose Answer
(A)
Yes
(B)
No, because DISTINCT is an ANSI SQL reserved word.
(C)
No, because DISTINCT is an Informatica expression reserved word.
(D)
No, because DISTINCT is both an ANSI SQL and an Informatica expression reserved word.
Choose Answer
(A)
Yes
(B)
No, because DISTINCT is an ANSI SQL reserved word.
(C)
No, because DISTINCT is an Informatica expression reserved word.
(D)
No, because DISTINCT is both an ANSI SQL and an Informatica expression reserved word.
Informatica Test functions
The following are valid Informatica Test functions:
Choose Answer
(A)
ISNULL, IS_DATE, IS_NUMBER, IS_SPACES
(B)
ISNOTNULL, ISDATE, ISHERE
(C)
IS NULL, ISANUMBER, ISADATE, ISADECIMAL
(D)
NO_DOUBT, IS_LIVE, ISILDOR, ISENGARD
Choose Answer
(A)
ISNULL, IS_DATE, IS_NUMBER, IS_SPACES
(B)
ISNOTNULL, ISDATE, ISHERE
(C)
IS NULL, ISANUMBER, ISADATE, ISADECIMAL
(D)
NO_DOUBT, IS_LIVE, ISILDOR, ISENGARD
Interpreting expression
A user enters the following expression into an Expression transformation:( PRICE - COST ) QUANTITY. The Expression transformation is part of a mapping with a relational database source definition. Assuming that the expression is valid, when the mapping runs as part of a session, how will the Informatica server treat the above expression?
Choose Answer
(A)
It will interpret the expression directly.
(B)
It will embed the expression into the designated source code file for the session and then compile it so that it can be executed.
(C)
It will include the statement in the SQL select statement that will be submitted to the source database.
(D)
It will embed the expression into the primary session stored procedure script that will be executed on either the source database or another database that was specified by the user.
Choose Answer
(A)
It will interpret the expression directly.
(B)
It will embed the expression into the designated source code file for the session and then compile it so that it can be executed.
(C)
It will include the statement in the SQL select statement that will be submitted to the source database.
(D)
It will embed the expression into the primary session stored procedure script that will be executed on either the source database or another database that was specified by the user.
LTRIM
For a row where the value of the port LAST_NAME is equal to the string 'Damato' what would be the return value of the expression LTRIM ( LAST_NAME, 'A' )?
Choose Answer
(A)
Dmato
(B)
Dmto
(C)
amato
(D)
Damato
Choose Answer
(A)
Dmato
(B)
Dmto
(C)
amato
(D)
Damato
Mapping validity
Which situation would always cause a mapping to be invalid?
Choose Answer
(A)
A target definition with no data flowing into it
(B)
Two ports with different data types connected together
(C)
Two active transformations connected to the same transformation
(D)
A Source Qualifier with port names that do not match a field name in the corresponding Source definition.
Choose Answer
(A)
A target definition with no data flowing into it
(B)
Two ports with different data types connected together
(C)
Two active transformations connected to the same transformation
(D)
A Source Qualifier with port names that do not match a field name in the corresponding Source definition.
Data types
A developer wishes to connect two ports that have different data types. Is this allowed?
Choose Answer
(A)
Yes, always
(B)
Yes, provided that the data types are compatible. The Informatica server will automatically convert the original type to match the destination type.
(C)
Yes, provided that the data types are compatible, and the developer writes a valid conversion function to convert the original type to match the destination type.
(D)
No, never.
Choose Answer
(A)
Yes, always
(B)
Yes, provided that the data types are compatible. The Informatica server will automatically convert the original type to match the destination type.
(C)
Yes, provided that the data types are compatible, and the developer writes a valid conversion function to convert the original type to match the destination type.
(D)
No, never.
Working with Expressions
A transformation has the following ports: Port_1: String, Input port; Port_2: String, Input port; Port_3: String, Output port. Which of the expressions shown below would be valid? Assume that it is associated with Port_3 and that the string ENDSTRING is not a parameter or mapping variable.
Choose Answer
(A)
Port_1|| Port_2 || 'ENDSTRING'
(B)
Port_1 || Port_2 || "ENDSTRING"
(C)
Port_1 || Port_2 || ENDSTRING
(D)
CONCAT(Port_1, CONCAT(Port_2, "ENDSTRING"))
Choose Answer
(A)
Port_1|| Port_2 || 'ENDSTRING'
(B)
Port_1 || Port_2 || "ENDSTRING"
(C)
Port_1 || Port_2 || ENDSTRING
(D)
CONCAT(Port_1, CONCAT(Port_2, "ENDSTRING"))
Transformation expressions
A transformation has the following ports: Port_1: Decimal, Input port; Port_2: Decimal, Input port; Port_3: String, Input port; Port_4: Decimal, Output port; Port_5: Decimal, Output port. Which of the expressions shown below would be invalid? Assume it is associated with Port_4.
Choose Answer
(A)
IIF ( Port_1 > 5, Port_2 10, Port_2 15 )
(B)
IIF ( Port_1 > 5, Port_1 10 )
(C)
IIF ( Port_5 > 7, Port_5 10, Port_5 15 )
(D)
IIF ( Port_2 > 8, Port_2 10, Port_2 15 )
Choose Answer
(A)
IIF ( Port_1 > 5, Port_2 10, Port_2 15 )
(B)
IIF ( Port_1 > 5, Port_1 10 )
(C)
IIF ( Port_5 > 7, Port_5 10, Port_5 15 )
(D)
IIF ( Port_2 > 8, Port_2 10, Port_2 15 )
Session Task
Whether or not a Session Task can be considered to have heterogeneous targets is determined by
Choose Answer
(A)
The Mapping properties alone.
(B)
The Session Task properties alone.
(C)
Either the Mapping properties or the Session Task properties.
(D)
Either the Mapping properties or the Workflow properties.
Choose Answer
(A)
The Mapping properties alone.
(B)
The Session Task properties alone.
(C)
Either the Mapping properties or the Session Task properties.
(D)
Either the Mapping properties or the Workflow properties.
Editing Target definition
Under what circumstances can a Target definition be edited from the Mapping Designer, within the mapping where that Target definition is being used?
Choose Answer
(A)
When the Target definition is not shared (not a shortcut).
(B)
When the Target definition is not shared (not a shortcut) and when the user has write permission on the folder where the mapping is stored.
(C)
Always
(D)
Neve
Choose Answer
(A)
When the Target definition is not shared (not a shortcut).
(B)
When the Target definition is not shared (not a shortcut) and when the user has write permission on the folder where the mapping is stored.
(C)
Always
(D)
Neve
Target definitions
What types of Target definitions are supported in a mapping?
Choose Answer
(A)
Relational
(B)
Relational and XML
(C)
Relational, XML and flat file
(D)
Relational, XML, flat file and COBOL
Choose Answer
(A)
Relational
(B)
Relational and XML
(C)
Relational, XML and flat file
(D)
Relational, XML, flat file and COBOL
Flat File Wizard
A developer has used the Flat File Wizard to create a fixed-width flat file source definition. This source definition is used in several mappings. The next day, she discovers that the actual flat file that will be accessed by the Informatica server will be comma delimited. What action, if any, should be taken?
Choose Answer
(A)
No action need be taken provided the new file format is valid.
(B)
Edit the Source definition properties to make them correct and save the changes to the repository.
(C)
Launch the Flat File Wizard using the Source definition and edit the properties to make them correct. Save the changes to the repository.
(D)
Delete the Source definition, save the repository, re-import it using the Flat File Wizard and define the properties to make them correct. Add the new Source definition to the affected mappings and save the changes to the repository.
Choose Answer
(A)
No action need be taken provided the new file format is valid.
(B)
Edit the Source definition properties to make them correct and save the changes to the repository.
(C)
Launch the Flat File Wizard using the Source definition and edit the properties to make them correct. Save the changes to the repository.
(D)
Delete the Source definition, save the repository, re-import it using the Flat File Wizard and define the properties to make them correct. Add the new Source definition to the affected mappings and save the changes to the repository.
Primary and foreign key relationship
Can a developer manually define a primary and foreign key relationship between two columns in two different relational Source definitions?
Choose Answer
(A)
Yes, always.
(B)
Yes, provided that the data types and precision matches between the two columns.
(C)
Yes, provided that the data types and precision matches between the two columns and the relationship exists on the physical database tables when the session runs.
(D)
Yes, provided that the data types and precision matches between the two columns. The relationship can be set between the Source definitions regardless of whether the relationship exists on the physical database tables, but if the relationship does not exist in the database, the session may fail if referential integrity is faulty.
Choose Answer
(A)
Yes, always.
(B)
Yes, provided that the data types and precision matches between the two columns.
(C)
Yes, provided that the data types and precision matches between the two columns and the relationship exists on the physical database tables when the session runs.
(D)
Yes, provided that the data types and precision matches between the two columns. The relationship can be set between the Source definitions regardless of whether the relationship exists on the physical database tables, but if the relationship does not exist in the database, the session may fail if referential integrity is faulty.
Tasks on a port level
Which tasks can be performed on a port level (using one specific port)?
Choose Answer
(A)
Enter expressions, define port variables, override default values
(B)
Enter expressions, define port and Mapping variables, override default values
(C)
Define local and Mapping variables, define parameters, override default values
(D)
Enter expressions, define port and Mapping variables, define parameters
Choose Answer
(A)
Enter expressions, define port variables, override default values
(B)
Enter expressions, define port and Mapping variables, override default values
(C)
Define local and Mapping variables, define parameters, override default values
(D)
Enter expressions, define port and Mapping variables, define parameters
Supported transformation ports
What types of transformation ports are supported?
Choose Answer
(A)
Input, Output, Variable
(B)
Input, Output, Input / Output, Variable
(C)
Input, Output, Variable, Aggregate
(D)
Input, Output, Input / Output, Variable, Parameter
Choose Answer
(A)
Input, Output, Variable
(B)
Input, Output, Input / Output, Variable
(C)
Input, Output, Variable, Aggregate
(D)
Input, Output, Input / Output, Variable, Parameter
link a port
A user is attempting to link a port on the left to another port in a different transformation on the right. The Designer will not establish the connector link (blue arrow). What are the possible reasons for this?
Choose Answer
(A)
Link columns mode not set, or left port not an output port
(B)
Link columns mode not set, or left port not an output port, or data type mismatch
(C)
Link columns mode not set, or left port not an input port, or right port not an output port, or data type mismatch
(D)
Link columns mode not set, or left port not an output port, or right port not an input port, or data type mismatch
Choose Answer
(A)
Link columns mode not set, or left port not an output port
(B)
Link columns mode not set, or left port not an output port, or data type mismatch
(C)
Link columns mode not set, or left port not an input port, or right port not an output port, or data type mismatch
(D)
Link columns mode not set, or left port not an output port, or right port not an input port, or data type mismatch
Copy a Source Definition from a shared folder to a non-shared folder
A user desires to copy a Source Definition from a shared folder to a non-shared folder. Assuming that the user has write permission on the non-shared folder, what must be done in order for this operation to work as intended?
Choose Answer
(A)
The Source Analyzer must be active and the non-shared folder must be open.
(B)
The Source Analyzer must be active, the non-shared folder must be open, and the user must hold down the Ctrl key while dragging.
(C)
The Source Analyzer must be active and the shared folder must be open.
(D)
The Source Analyzer must be active, the shared folder must be open, and the user must hold down the Ctrl key while dragging.
Choose Answer
(A)
The Source Analyzer must be active and the non-shared folder must be open.
(B)
The Source Analyzer must be active, the non-shared folder must be open, and the user must hold down the Ctrl key while dragging.
(C)
The Source Analyzer must be active and the shared folder must be open.
(D)
The Source Analyzer must be active, the shared folder must be open, and the user must hold down the Ctrl key while dragging.
Designer option cannot be set locally
Specify which Designer option cannot be set locally (differently for each client machine).
Choose Answer
(A)
Whether to display column names or business names for all Source Qualifiers
(B)
Whether to import primary keys when importing a target definition
(C)
Whether to import data type lengths and precisions for Source Definitions
(D)
Whether to display targets grouped by database in the Navigator Window
Choose Answer
(A)
Whether to display column names or business names for all Source Qualifiers
(B)
Whether to import primary keys when importing a target definition
(C)
Whether to import data type lengths and precisions for Source Definitions
(D)
Whether to display targets grouped by database in the Navigator Window
"Find" search tool
The Designer includes a "Find" search tool as part of the standard toolbar. What can it be used to find?
Choose Answer
(A)
Column or port names in any transformation, source or target definition
(B)
Column or port names in any transformation, source or target definition, and strings in any of the output windows
(C)
Column or port names in any transformation, source or target definition, strings in any of the output windows, and expressions in any transformation
(D)
Column or port names in any transformation, source or target definition, strings in any of the output windows, expressions in any transformation, and descriptive text
Choose Answer
(A)
Column or port names in any transformation, source or target definition
(B)
Column or port names in any transformation, source or target definition, and strings in any of the output windows
(C)
Column or port names in any transformation, source or target definition, strings in any of the output windows, and expressions in any transformation
(D)
Column or port names in any transformation, source or target definition, strings in any of the output windows, expressions in any transformation, and descriptive text
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