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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. Which of the following describes a type two update in a Slowly Changing Dimensions (SCD) stage?

A) An update that replaces the existing column value if a specified condition is satisfied.
B) An update that overwrites the existing column value.
C) An update the retains the existing column value in an historical row and creates a new row with the new value.
D) An update that retains the existing column value in a list and adds the new value to the list.

2. You are asked to identify the jobs and shared containers that use the ADDRESS column. The Size has changed from 50 to 120 characters in the source system so the jobs must be updated with the new size. What feature of the Designer will locate where a column is used in a DataStage project?

A) Open the Table Definition properties, Select the ADDRESS column, then right click and select Find where used.
B) From Designer Tools, open an Advanced Find dialog. Enter the column name in the Name to find field. Select Jobs and Shared Containers from the Type to find list.
C) From Designer Tools open an Advanced Find dialog. Select Columns from the Type list and enter the column name in the Name To Find field.
D) Select a Table Definition, then right click and choose Find where column is used. Select the column to search for from the list.

3. Which two statements are correct when referring to an Aggregator Stage? (Choose two.)

A) Use Sort method with a large number of distinct key-column values
B) Use Sort method for a limited number of distinct key values
C) Use Hash method with a large number of distinct key-column values
D) Use Hash method for a limited number of distinct key values

4. Which two statements are true about DataStage parallel routines? (Choose two.)

A) Parallel routines can be written that are called from within the Transformer stage.
B) Parallel routines are written in DataStage Basic.
C) Parallel routines are coded within a DataStage Designer editor.
D) Parallel routines can be written that are called before or after a stage runs.
E) Parallel routines created as shared library functions are not supported.

5. A dataset was created earlier with one partition, with the Preserve Partitioning flag set. A subsequent job using a 2-node configuration file reads from that dataset, passing data to a Transformer stage with "Same" partitioning.
Which two statements are true? (Select two)

A) DataStage will repartition the data and run one instance of the Transformer stage.
B) Setting the Preserve Partitioning flag to "Clear" will generate two instances of the Transformer stage.
C) Setting the Preserve Partitioning flag to "Set" will run one instance of the Transformer stage.
D) The DataStage job will abort.
E) Inserting a Sort stage prior to the Transformer stage will force its parallel execution.

Solutions: