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IBM C2090-418 Exam Syllabus Topics:

IBM Websphere Datastage V.8.0 Sample Questions:

1. You need to invoke a job from the command line that is a multi-instance enabled. What is the correct syntax to start a multi-instance job?

A) dsjob -run -mode MULTI <project> <job>.<instance>
B) dsjob -run -mode NORMAL <project> <job>.<instance>
C) dsjob -run -mode NORMAL -instance <instance> <project> <job>
D) dsjob -run -mode NORMAL -wait -instance <instance> <project> <job>

2. Click the Exhibit button.
The job shown in the exhibit combines data from 50 million parts and a 30,000 suppliers in the same Oracle instance, writing the 50 million output rows to a single target DB2 database. Which two changes can be made to improve performance of the given job design? (Choose two.)

A) Replace the two source Oracle stages and Join with a single Oracle stage using a SQL join between the two tables.
B) Replace the Join stage with a Lookup stage.
C) Replace the target DB2 Enterprise stage with a DB2 API stage.
D) Replace the Oracle Enterprise stages with Oracle API stages.

3. In which two situations is it appropriate to use a Sparse Lookup? (Choose two.)

A) When invoking a stored procedure within a database per row in the streaming link.
B) When the output of the Lookup stage needs to be hashed partitioned.
C) When reference data is significantly larger than the streaming data (100:1).
D) When accessing DB2 data using the DB2 API stage.

4. 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 Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.
C) 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.
D) Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.

5. Your job design calls for using a target ODBC connector stage. The target database is found on a remote server. The target table you are writing into contains a single column primary key. What is the one required property for the Connection properties?

A) Remote server
B) Password
C) Username
D) Data source

Solutions: