IBM InfoSphere DataStage v8.5 : C2090-421

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. Which two tasks can the Slowly Changing Dimensions (SCD) stage perform? (Choose two.)

A) Look up whether a record with a matching business key value exists in a dimension table. If it does not, retrieve a new surrogate key value and insert a new row into the dimension table.
B) Look up whether a record with a matching business key value exists in a dimension table. If it does, add new values for selected fields to values lists for those fields.
C) Look up whether a record with a matching business key value exists in a dimension table. If it does, mark the record as not-current, and generate a new record with new values for selected fields.
D) Look up whether a record with a matching business key value exists in a fact table. If it does not, retrieve a new surrogate key value and insert a new row into the fact table.

2. Which three environment variables are used for reporting on DataStage jobs? (Select three)

A) $APT_PM_STARTUP_CONCURRENCY
B) $OSH_PRINT_SCHEMAS
C) $APT_DUMP_SCORE
D) $APT_DISABLE_ROOT_FORKJOIN
E) $APT_PM_PLAYER_MEMORY

3. What are two ways to specify a stylesheet in an XML input stage? (Choose two.)

A) On the output link advanced properties tab, load the content or path of a stylesheet that is stored on the engine tier host.
B) On the output link columns properties tab, identify an input column that contains the stylesheet URL.
C) On the output link advanced properties tab, type the stylesheet in the Stylesheet box.
D) On the output link columns properties tab, type the stylesheet in the XLST box.

4. In a Transformer Stage you have a nullable input column that is mapped to a non-nullable output column. What two techniques can be used to handle NULL values? (Choose two.)

A) NullToValue(input_column, 'unknown').
B) IF input_column = NULL THEN 'unknown' ELSE input_column.
C) IF input_column = '' THEN 'unknown' ELSE input_column.
D) IF IsNULL(input_column) THEN 'unknown' ELSE input_column.

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

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