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IBM InfoSphere DataStage v8.5 Sample Questions:

1. Your job is using the DB2 Enterprise stage as a target. In this job you are inserting data into a single existing table on a remote database. You are using Run-Time Column Propagation (RCP) on all of the links.
Which two job design configuration actions would you consider to effectively use RCP? (Select two)

A) Use DB2 partitioning properties on the input link to the DB2 Enterprise stage to control column layout in partitions.
B) Use a Modify stage prior to the DB2 Enterprise stage in order to drop the columns not found in the table.
C) In the DB2 Enterprise stage set the option named "Silently Drop Columns Not in Table" to "True".
D) In the DB2 Enterprise stage use Connection properties to manage column mappings.

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

A) An update that retains the existing column value in a list and adds the new value to the list.
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 replaces the existing column value if a specified condition is satisfied.
D) An update that overwrites the existing column value.

3. In the exhibit, the Aggregator stage aggregates over CustomerID. The Join stage joins by CustomerID. When the score is created, DataStage will insert hash partitioners and tsort operators to ensure the correct results.

Which two choices will eliminate sort operators from being inserted at run-time? (Select two)

A) Add a Sort stage before the Copy stage and specify Same partitioners for the links going into the Aggregator and Join stages.
B) Add Sort stages in front of the Join stage and specify the Same partitioner for the links going into the Join. Set the $APT_NO_SORT_INSERTION environment variable to "True".
C) Add a Sort stage before the Aggregator stage and specify the Same partitioner for the link going into the Aggregator Set the $APT_SORTJNSERTION_CHECK_ONLY environment variable to "True".
D) Add a Sort stage before the Copy stage and specify Auto partitioned for the links going into the Aggregator and Join stages.

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

5. A client needs to process a flat file where a set of values in the import data columns should be treated as Null. What is the best way to handle multiple Null values using a Sequential File stage?

A) On the Input Link format tab, specify a separator character in the dependent Null field value separator property and then use this separator to delimit the null values in the Null field value property. Click here to input option.
B) On the Output Link format tab, specify the null values in double quotes separated by a comma in the Null field value property.
C) On the Input Link format tab, specify the null values in double quotes separated by a comma in the Null field value property.
D) On the Output Link format tab, specify a separator character in the dependent Null field value separator property and then use this separator to delimit the null values in the Null field value property.

Solutions: