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IBM A2090-421 Exam Syllabus Topics:

IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

Question 1

Which two statements about annotations are correct? (Select two)

A. An annotation can be drawn around one of more stages.
B. The Short job description field displays on log summary lines within Director client.
C. The Short job description field will appears in job log when $APT_PM_SHOW_PIDS is set.
D. The Full job description field is only visible within the Designer Client.

Question 2

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. By default, the Change Capture stage produces an output change link with which two characteristics? (Choose two.)

A. Table Definition based on the keys of the input link
B. added column named Difference_Value
C. added column named Change_Code
D. Table Definition based on the after input link

Question 3

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 and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
B. 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.)
C. 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.
D. The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.

Question 4

In your DB2 database you have column names that use characters # and $. Which two steps should be completed to allow DataStage to convert these characters into internal format and back as necessary? (Select two)

A. Avoid using the strings_025_and_026_in your IBM DB2 column names.
B. Avoid using the strings_035_and_036_in your IBM DB2 column names.
C. Set environment variable $DS_ENABLE_RESERVED_NUM_CONVERT to true.
D. Set environment variable $DS_ENABLE_RESERVED_CHAR_CONVERT to true.

Question 5

You have a 3TB dataset hash-partitioned on CustID in a clustered environment. You need to join this dataset with 1GB of reference data on OrderID. Which technique is most appropriate?

A. Use Join stage, hash-partition and sort both link on OrderID.
B. Use Lookup stage, select auto partitioning for both link.
C. Use Lookup stage, select auto partitioning for the stream link and entire partitioning for the reference link.
D. Use Lookup stage, select auto partitioning for the stream link and hash-partition the reference link on CustI

Solutions: