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IBM InfoSphere DataStage v8.5 Sample Questions:

1. What is the correct method to process a file containing multiple record types using a Complex Flat File stage?

A) Define record definitions on the Constraints tab of the Complex Flat File stage.
B) Manually break the file into multiple files by record type.
C) Use a Modify stage to convert the output array from the Complex Flat File to a subrecord.
D) Define record ID constraints on the Records ID tab of the Complex Flat File stage.

2. A 100MB input dataset has even distribution across 400 unique key values.
When run with a 4-node configuration file, which two changes could improve sort performance in this scenario? (Select two)

A) Specify Round Robin partitioning on the input link to the Sort stage.
B) Set $APT_TSORT_STRESS_BLOCKSIZE to 50M
C) Convert all numeric fields to varchars.
D) Specify "Restrict Memory Usage" to 60MB on the Sort stage properties.
E) Alter the Sort stage properties to perform a stable sort.

3. Rows of data going into a Transformer stage are sorted and hash partitioned by the Input.Product column. Using stage variables, how can you determine when a new row is the first of a new group of Product rows?

A) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct . Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
B) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product = sv_Product THEN "YES"
ELSE "NO".
C) Create a stage variable named sv_Product and follow it by a second stage variable named
sv_IsNewProduct . Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".
D) Create a stage variable named sv_IsNewProduct and follow it by a second stage variable
named sv_Product. Map the Input.Product column to
sv_Product. The derivation for sv_IsNewProduct is: IF Input.Product <> sv_Product THEN "YES"
ELSE "NO".

4. You have a parallel shared container that is used by other parallel jobs within your project. Part of the logic in this shared container has been changed. Which two statements are true regarding this change to the parallel shared container? (Choose two.)

A) Jobs using this parallel shared container need to be re-compiled.
B) Jobs using this parallel shared container need to be re-compiled only when the metadata of the container is changed.
C) Use usage analysis and multi-compile to re-compile job using this shared container.
D) You can create a sequencer to re-compile all of the routines using this shared container.

5. You are using the Change Capture stage in your job design to identify changes made to the input link (before image) to obtain the results in the output link. This job will be using a multi-node configuration file when executed. By default, the Change Capture stage produces an output change link with which two characteristics? (Choose two.)

A) Table Definition based on the after input link
B) added column named Change_Code
C) added column named Difference_Value
D) Table Definition based on the keys of the input link

Solutions: