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IBM InfoSphere DataStage v8.5 Sample Questions:

1. A star schema data warehouse consists of four dimension tables and one fact table. How many Slowly Changing Dimensions (SCD) stages will you need in your jobs to update the star schema tables?

A) four
B) two
C) five
D) three

2. Which condition is required to use the LastRowInGroup() function to determine a key break on a field?

A) The input data has to be sorted by the key field, but it is not required that DataStage be able to detect this. For example, the input data might be sorted before it is input to the job. (However, the job will abort at runtime if the data isn't sorted.)
B) The LastRowInGroup() function does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.
C) The input data has to be sorted by the key field and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
D) The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.

3. You are using the Change Capture stage in your job design to identify changes made to the input link (before image) to obtain the results in the output link. This job will be using a multi-node configuration file when executed.
What are two requirements on the input link data for the Change Capture stage? (Select two)

A) Merged links
B) Sorted
C) Sequential mode
D) Key partitioned

4. Which three environment variables are used for reporting on DataStage jobs? (Select three)

A) $APT_DUMP_SCORE
B) $APT_PM_PLAYER_MEMORY
C) $APT_DISABLE_ROOT_FORKJOIN
D) $OSH_PRINT_SCHEMAS
E) $APT_PM_STARTUP_CONCURRENCY

5. A job is using the Load method in the DB2 and Oracle Enterprise stage for parallel loading into a single table. The job fails at runtime and you see there are new table rows added. What would explain this result? (Select two)

A) Some partitions completed before failure.
B) Commit size is smaller than source data.
C) Load operations are sequential.
D) Load operations are parallel.

Solutions: