IBM C2090-421 : InfoSphere DataStage v8.5

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IBM C2090-421 Exam Syllabus Topics:

IBM InfoSphere DataStage v8.5 Sample Questions:

1. 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 Input Link format tab, specify the null values in double quotes separated by a comma in the Null field value property.
C) 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.
D) On the Output Link format tab, specify the null values in double quotes separated by a comma in the Null field value property.

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

3. Records in a source file must be copied to multiple output streams for further processing. Which two conditions would require the use of a Transformer stage instead of a Copy stage? (Choose two.)

A) Converting some input columns from integers to strings.
B) Directing selected output records down one output link rather than another.
C) Renaming one or more output columns.
D) Concatenating data from multiple input columns.

4. Which two statements are correct when using the Oracle Enterprise stage? (Choose two.)

A) Define variable $TNS_ADMIN to point to the tnsnames.ora file location.
B) Add $ORACLE_HOME/bin to the $PATH and $ORACLE_HOME/lib to the $LIBPATH, $LD_LIBRARY_PATH, or $SHLIB_PATH.
C) $APT_ORCHHOME/bin must appear before $ORACLE_HOME/bin in the $PATH.
D) DataStage Designer requires connectivity to the Oracle database during job development.

5. A script invokes an update job called "UpdateKeys" via a command line invocation of the dsjob command. The service is to wait for the completion and status of this job before continuing with the rest its tasks. Which three commands would invoke the "UpdateKeys" job in the MigrationProject and wait for its completion status? (Select three)

A) dsjob -run -jobstatus MigrationProject UpdateKeys
B) dsjob-run-userstatus MigrationProject UpdateKeys
C) dsjob-run-wait MigrationProject UpdateKeys
D) dsjob -run MigrationProject UpdateKeys
E) dsjob -run -log dsjob -run -userstatus MigrationProject UpdateKeys

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