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IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:

1. There is a requirement to load mainframe data with array columns having redefined fields into a flat file. How can the Complex Flat File

A) Within CFF, use the Complex File Load Option window with "Flatten selective arrays" option selected. Select the array with redefine column(s) and click redefine check box option.
B) Within CFF, use the Complex File Load Option window with "Flatten all arrays" option selected. CFF will handle flattening automatically.
C) Select the Records ID tab on the Stage page. Select a record from the Records list. Select the column(s) with the redefine from the Column list. Within CFF, use the Complex File Load Option window with "Flatten selective arrays" option selected.
D) CFF does not support flattening for redefined fields.

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

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

3. Which condition is required to use the LastRowInGroup() function to determine a key break on a field?

A) The input data has to be sorted by the key field, but it is not required that DataStage be able to detect this. For example, the input data might be sorted before it is input to the job. (However, the job will abort at runtime if the data isn't sorted.)
B) The LastRowInGroup() function does not require the data to be either sorted or grouped by the key field. If necessary the LastRowInGroup() function will perform a sort.
C) The input data has to be sorted by the key field and DataStage must be able to detect that the data is sorted, for example, by the presence of a Sort stage.
D) The LastRowInGroup() function requires the data to be grouped by the key field, but the data does not have to be sorted.

4. Which two statements are true about DataStage Parallel Build stages? (Choose two.)

A) Build stages can only be used in a job that has Runtime Column Propagation (RCP) enabled.
B) The Build stage can be programmed to read and write automatically or code can be written to manually read and write rows.
C) On the Logic Post-Loop, you specify code that runs after all input records have been processed.
D) The Build stage generates a C/C++ source file that is compiled and linked outside of DataStage.

5. A star schema data warehouse consists of four dimension tables and one fact table. How many Slowly Changing Dimensions (SCD) stages will you need in your jobs to update the star schema tables?

A) two
B) three
C) five
D) four

Solutions: