IBM C2090-418

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IBM Websphere Datastage V.8.0 Sample Questions:

1. Which import option can be used to import metadata from a data modeling tool such as Erwin or Rational Data Architect?

A) Import a table definition using the Plug-In Meta Data facility.
B) Import a table definition using the Connector wizard.
C) Import DataStage components.
D) Import using bridges.

2. Which Oracle Enterprise stage read property can be set using db options to tune job performance?

A) partitionsize
B) transactsize
C) memsize
D) arraysize

3. A scenario requires selecting only the most recent transactions for each of 2 million unique customers from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?

A) Using the DB2 API stage, select all rows. Use a parallel Sort stage with customer number and order date sort keys in ascending order, then Remove Duplicates with Last Duplicate to retain.
B) Using the Dynamic Relational stage, use custom SQL to select all DISTINCT customer numbers from the order history table.
C) Select all rows using the ODBC Connector stage, use a Sort Aggregator on customer number key to select the maximum order date.
D) Using the DB2 Enterprise stage, select all rows. Perform a unique Sort using customer number and order date sort keys in ascending order.

4. A DataStage job uses an Inner Join to combine data from two source parallel data sets that were written to disk in sort order based on the join key columns. Which two methods could be used to dramatically improve performance of this job? (Choose two.)

A) Set the environment variable $APT_SORT_INSERTION_CHECK_ONLY.
B) Explicitly specify hash partitioning and sorting on each input to the Join stage.
C) Unset the Preserve Partitioning flag on the output of each parallel data set.
D) Add a parallel sort stage before each Join input, specifying the "Don't Sort, Previously Grouped" sort key mode for each key.

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

Solutions: