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IBM Websphere Datastage V.8.0 Sample Questions:

1. You have a job sequence that runs J1, J2, and J3 sequentially. It has been compiled with "Add checkpoints so sequence is restartable". J1 must execute every run even after a
failure. Which two properties must be selected to ensure that J1 is run each time, even after a failure? (Choose two.)

A) Use the Nested Condition Activity with a trigger leading to J1; set the trigger expression type to "Unconditional".
B) Set the J1 Activity stage to "Do not checkpoint run.".
C) In the J1 Activity stage set the Execution action to "Reset if required, then run.".
D) Set trigger on the J1 Activity stage to "Unconditional".

2. A scenario requires selecting only the most recent transactions for each of 2 million unique customers from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?

A) Select all rows using the ODBC Connector stage, use a Sort Aggregator on customer number key to select the maximum order date.
B) Using the DB2 API stage, select all rows. Use a parallel Sort stage with customer number and order date sort keys in ascending order, then Remove Duplicates with Last Duplicate to retain.
C) Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.
D) Using the Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.

3. Click the Exhibit button.
In the exhibit, you have three jobs: J1,J2,J3. The Job Sequencer compilation option, "Automatically Handle Activities that fail" is checked. Which two methods shown in the
exhibit ensure J1 and J2 finish successfully before J3? (Choose two.)

A) Exhibit C
B) Exhibit A
C) Exhibit B
D) Exhibit D

4. You need to update three dimension tables and one fact table in a star schema data warehouse using the Slowly Changing Dimensions (SCD) stage. How many SCD stages will you need in your jobs?

A) Two
B) Four
C) One
D) Three

5. Click the Exhibit button.
A parallel job is designed to Join data from two existing persisted data sets that were created in sort order using the join keys. You have optimized the job to leverage the existing sort order instead of resorting. Using the job score fragment shown in the exhibit for this job, how would you verify that this job is optimizing the sort operation?

A) The subargs property indicates that the sort is only checking sort order.
B) The job is not optimized because the sort is inserted after the RemDup operator.
C) The job is not optimized; there are inserted tsort operators.
D) This cannot be verified from the job score. You must set the environment variable $DS_PX_DEBUG and verify the captured files.

Solutions: