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IBM C2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Data Transformation and Processing | 25% | - Slowly Changing Dimensions (SCD) - Lookup and reference data - Transformer stage logic - Handling NULL values and data types |
| Topic 2: DataStage Architecture and Components | 20% | - Parallel framework concepts - InfoSphere Information Server architecture - Client and server components - Project and repository management |
| Topic 3: Job Design and Development | 30% | - Stage usage and configuration - Sequential and parallel job creation - Data linking and partitioning - Parameter sets and environment variables |
| Topic 4: Advanced Features and Integration | 10% | - Metadata management - Source control integration - Job sequences and control flow |
| Topic 5: Job Execution, Monitoring and Troubleshooting | 15% | - Debugging and validation - Director client usage - Job logs and error handling - Performance optimization |
IBM InfoSphere DataStage v8.5 Sample Questions:
1. You are processing groups of rows in a Transformer. The first row in each group contains "1" in the Flag column and "0" in the remaining rows of the group. At the end of each group you want to sum and output the QTY column values. Which three techniques will enable you to retrieve the sum of the last group? (Choose three.)
A) Output the sum that you generated each time you process a row for which the LastRow() function returns True.
B) Output a running total for each group for each row. Follow the Transformer stage by an Aggregator stage. Take the MAX of the QTY column for each group.
C) Within each group sort the Flag column in ascending order. Output the sum each time you process the row with a "1" in the Flag column.
D) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column. Use the LastRow() function to determine when the last group is done.
E) Output the sum that you generated up to the previous row each time you process a row with a "1" in the Flag column.
2. In a Transformer expression for a stage variable, there is a nullable input column. What happens when a row is processed that contains NULL in that input column?
A) The value written to the stage variable is undetermined.
B) The row is rejected.
C) The job aborts.
D) NULL is written to the stage variable.
3. The Change Apply stage produces a change Data Set with a new column representing the code for the type of change. What are three change values identified by these code values? (Choose three.)
A) Remove Duplicates
B) Edit
C) Copy
D) Deleted
E) Final
4. How are Shared Table definitions created from the DataStage Client?
A) No need to, DataStage table definitions are automatically saved as shared metadata.
B) Using the "Save" button on the "Table Properties" panel
C) This cannot be done from the DataStage Client
D) Using the "Save" button on the columns tab on the Stage/Link editor
E) Using the "Shared Table Creation Wizard" from the DataStage Client.
5. Click the Exhibit button.
The job in the exhibit runs to successful completion with no warnings. However, a validation test identifies that the CUSTOMER_MASTER table is empty. You suspect the cause to be related to the NEW_CUSTOMERS table or a defect in the job. Examining runtime meta-data will help you track down the problem. Which two product features will help you isolate the cause of the problem? (Choose two.)
A) $APT_PM_PLAYER_STATS
B) Show Performance Statistics in the Designer.
C) Use job run operational meta-data reports from IS Manager.
D) Job Monitor Tool in the Director Client
Solutions:
| Question # 1 Answer: B,C,D | Question # 2 Answer: D | Question # 3 Answer: B,C,D | Question # 4 Answer: E | Question # 5 Answer: B,D |
