IBM IBM certifications I 000-418

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IBM Websphere Datastage V.8.0 Sample Questions:

1. A parallel job combines rows from a source DB2 table with historical information maintained in two separate Oracle tables. Only rows in the DB2 source whose key values match either Oracle table are output to a target Teradata table. Both Oracle tables have identical column definitions and are stored in the same Oracle instance. Which two design techniques would satisfy this requirement? (Choose two.)

A) Use a separate Oracle Enterprise stage for each source table to a Funnel stage and then perform an inner join with rows from a DB2 Enterprise stage.
B) Use a Lookup stage to combine the DB2 Enterprise input with each Oracle Enterprise reference link using range partitioning to limit each reference by historical data values.
C) Using a master DB2 Enterprise stage, merge by dropping unmatched masters against a single Oracle Enterprise stage with custom SQL with UNION ALL.
D) Combine the inputs from the DB2 Enterprise stage and two Oracle Enterprise stages using the Sort options of the Funnel stage defined onthe key columns.

2. What are three valid data types for "Calculation" Aggregation type in the Aggregator stage? (Choose three.)

A) Date
B) Decimal
C) Char
D) Integer
E) Varchar

3. A customer's business requirement states that the processing of a file must be aborted immediately if a certain condition is encountered within that file. How would this be accomplished within a Transformer stage?

A) Set the $APT_ABORT_ON_BAD_CONDITION environment variable.
B) Call a non-existent external UNIX function from within a stage variable definition.
C) Issue a warning message to be picked up by the Job Sequence condition.
D) Use a constraint and the "Abort After Rows" property on an output link.

4. Which three statements are true about Transfomer stages? (Choose three.)

A) @PARTNUM returns the number of job partitions currently active.
B) Derivations are written in C++.
C) Constraints can keep a record from being written to an output link.
D) Constraints are executed before output link derivations.
E) Stage variables are executed before output link derivations.

5. A job validates credit card numbers with a reference file using a Join stage and is hash partitioned by card number. Examination of Job Monitor reveals that some partitions process many more rows than others. Assuming adequate hardware resources, which two actions can be used to improve the performance of the job? (Choose two.)

A) Break the input file into multiple files.
B) Add an additional column to the hash keys.
C) Alter the number of partitions in the $APT_CONFIG_FILE.
D) Use Round Robin partitioning on the stream and Entire partitioning on the reference.

Solutions: