Exam Name: Assessment: InfoSphere DataStage v8.5
Certification Provider: IBM
Corresponding Certification: IBM Specialist
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IBM A2090-421 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Connectivity | 9% | - Database stage selection - ODBC, DB2, Oracle integration - Source and target database properties |
| Topic 2: Advanced Techniques | 10% | - Job deployment and packaging - Complex Flat File (CFF) stage - Environment variables and parameter sets |
| Topic 3: Performance & Troubleshooting | 15% | - Partitioning and sorting optimization - Monitor and log execution - Handle errors and rejects |
| Topic 4: Configuration | 6% | - Create and configure projects - Install and configure InfoSphere DataStage v8.5 - Understand architecture and components |
| Topic 5: Parallel Architecture | 9% | - Node pools and parallel processing - Data partitioning and collecting - Parallel execution and configuration files |
| Topic 6: Metadata Management | 6% | - Runtime Column Propagation (RCP) - Import and share metadata - Schema orchestration |
| Topic 7: Persistent Storage | 10% | - Restructure and format stages - Sequential files and file sets - Data sets and file structures |
| Topic 8: Job Design & Development | 25% | - Transformer and derivation logic - Job sequences and parameterization - Lookup, Join, Merge, and Funnel stages - Slowly Changing Dimensions (SCD) |
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
A customer requires reading a fixed-length sequential file in parallel where input rows can be identified. What two tasks must be done to meet these requirements? (Choose two.)
- A. Set $APT_READ_MULTI_NODES to TRUE.
- B. Set partitioning method to Same.
- C. Ensure data has unique identifiers for data rows.
- D. Specify Multiple readers per node.
Correct Answer: C,D 🗳️
A job is using the Load method in the DB2 and Oracle Enterprise stage for parallel loading into a single table. The job fails at runtime and you see there are new table rows added. What would explain this result? (Select two)
- A. Load operations are parallel.
- B. Some partitions completed before failure.
- C. Commit size is smaller than source data.
- D. Load operations are sequential.
Correct Answer: A,C 🗳️
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 up to the previous row each time you process a row with a "1" in the Flag column.
- B. Output the sum that you generated each time you process a row for which the LastRow() function returns True.
- 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 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.
Correct Answer: C,D,E 🗳️
Which of the following describes a type two update in a Slowly Changing Dimensions (SCD) stage?
- A. An update the retains the existing column value in an historical row and creates a new row with the new value.
- B. An update that retains the existing column value in a list and adds the new value to the list.
- C. An update that overwrites the existing column value.
- D. An update that replaces the existing column value if a specified condition is satisfied.
Correct Answer: B 🗳️
You are connected to a domain and must configure it for Source Code Integration.
What are the two things that must be done to associate your DataStage repository with a source control system? (Select two)
- A. From Designer Client choose Team Share Project.
- B. From Information Server Manager choose Team Import.
- C. From Information Server Manager choose Team Share Project.
- D. Create a source code control project with the same name as the domain. Choose Integrate Source Control.
Correct Answer: B,D 🗳️
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