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IBM Websphere Datastage V.8.0 Sample Questions:

1. You are assigned to write a job that reads in a Sequential File, applies some business logic, and writes the results to a database. However, the layout of the input file will change from run to run. All of the columns will remain the same, but the order of the columns will change. Which feature of the Sequential File stage would allow you to accomplish this task?

A) Reject Mode
B) First Line Is Column Names
C) Schema File
D) Filter

2. A DataStage job uses an Inner Join to combine data from two source parallel data sets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)

A) Explicitly specify hash partitioning and sorting on each input to the Join stage.
B) Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.
C) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.
D) Unset the Preserve Partitioning flag on the output of each parallel data set.

3. Which two job design techniques can be used to provide unique names to sequential output files that are used in multi-instance jobs? (Choose two.)

A) Prepend/append the Invocation Id to the file name.
B) Create the file name(s) from values contained in the data stream.
C) Use parameters to identify file names.
D) Create the file name(s) from values contained in a value file.

4. You would like to verify that a job in the QA project is identical to the one in development project. How can you do this?

A) From the repository tree, select the cross project compare utility.
B) Compare the job version number.
C) Compare the job description annotation fields of the two jobs.
D) Select the job in question and use the cross project compare utility.

5. Which three data types can the ODBC Enterprise stage handle? (Choose three.)

A) SQL_BIGINT
B) SQL_CLOB
C) SQL_VARBINARY
D) SQL_TIMESTAMP
E) SQL_SMALLDATETIME

Solutions: