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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which two of the following derivations for an output column named OutCol can be used to generate a unique sequence of integers across multiple partitions?

A) @INROWNUM
B) 1 + @NUMPARTITIONS * @INROWNUM
C) NextSurrogateKey()
D) @PARTITIONNUM + @NUMPARTITIONS

2. Which three environment variables are valid job score environment variables? (Select three)

A) APT_LOW_SCORE
B) APT_SAVE_SCORE
C) APT_THIN_SCORE
D) APT JAVA SCORE
E) APT_DUMP_SCORE

3. Which of the following describes a type two update in a Slowly Changing Dimensions (SCD) stage?

A) An update that replaces the existing column value if a specified condition is satisfied.
B) An update the retains the existing column value in an historical row and creates a new row with the new value.
C) An update that overwrites the existing column value.
D) An update that retains the existing column value in a list and adds the new value to the list.

4. Which three statements are true about stage variables in a Transformer Stage? (Choose three.)

A) A stage variable in one Transformer can refer to a stage variable in another Transformer, as long as the second Transformer was processed earlier in the job flow.
B) Stage variables can be set to NULL.
C) Varchar stage variables can be initialized with spaces.
D) Stage variables are refreshed with default values before each new input row is processed.
E) The expression executed for a stage variable can refer to a stage variable which is executed later.

5. You are given a job requirement that requires calculations based on the latest currency exchange rate. You decide to invoke a Web service to obtain the latest exchange rate.
What are two ways that you can perform a Web service invocation in a DataStage job to obtain the latest exchange rate? (Select two)

A) Use Web Services Transformer stage.
B) Use WISD Input stage.
C) Call a Web Service using a DSRoutine inside the Parallel Transformer stage.
D) Use Web Services Client stage as a lookup.

Solutions: