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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

Question 1

The result of a performance review for one of your job designs indicated this job needs to be split into two separate jobs. You also have been given the requirement to ensure you maintain parallelism (no re-partitioning) between these two new jobs.
Which single stage should you consider to accomplish maintaining parallelism and not introduce re-partitioning between these related jobs?

A. Copy stage
B. Named Pipe stage
C. Data Set stage
D. Sequential File stage

Question 2

In the job fragment shown in the exhibit, there are two Sort stages: the first (Sort1) sorts the data by state, the second (Sort2) sorts the data by state and area, No repartitioning occurs between the stages.
You have been asked to reduce the number of sorts to improve the performance of the job.

Which two ways might be used to accomplish this without changing how the job functions? (Select two)

A. In the second Sort stage change the Sort Mode property of the state column to "Don't sort, previously sorted.".
B. Remove the first Sort stage. Retain the existing sort keys in the second Sort stage.
C. In the second Sort stage change the Sort Mode property of the area column to "Don't sort, previously sorted.".
D. Remove the second Sort stage. Add area as an additional sort key.

Question 3

You are responsible for the projects Source Code Repository. When a developer notifies you that changes are ready to deploy you must first check them in. You will use the Information Server Source Code integration features to check in the changed assets. How will you identify the DataStage assets the developer modified in order to send them to the workspace?

A. From Information Server Manager use Search with advanced options, specify a date modified and the developer's user name in the Modified by fields.
B. Use Designer client Advanced Find, specify a modification date and the developer's username in the Modified by fields.
C. From the workspace perspective select the project Right-click then Refresh from repository, specify a modification date and the developer's username in the Modified by fields.
D. From the Information Server Manager Select the project then right-click on Synchronize with source code control system.

Question 4

Which two statements are correct when using the Oracle Enterprise stage? (Choose two.)

A. DataStage Designer requires connectivity to the Oracle database during job development.
B. Add $ORACLE_HOME/bin to the $PATH and $ORACLE_HOME/lib to the $LIBPATH, $LD_LIBRARY_PATH, or $SHLIB_PATH.
C. Define variable $TNS_ADMIN to point to the tnsnames.ora file location.
D. $APT_ORCHHOME/bin must appear before $ORACLE_HOME/bin in the $PATH.

Question 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 are the three "Write mode" properties that allow the possibility of multiple SQL actions? (Choose three.)

A. Update then insert
B. Join then update
C. Delete then insert
D. Truncate then add
E. Insert then update

Solutions: