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IBM C2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Data Integration | - Data transformation techniques - Connectivity to data sources and targets |
| InfoSphere DataStage Architecture | - Server and Parallel Job Architecture - Components (Designer, Director, Administrator) |
| Administration and Troubleshooting | - Error handling and recovery - Job monitoring and logging |
| Performance Optimization | - Parallel processing optimization - Job tuning and bottleneck analysis |
| Job Development | - Stages and transformers usage - Parallel job design principles - Job sequences and control logic |
IBM InfoSphere DataStage v8.5 Sample Questions:
Which Oracle data type conversion is correct?
- A. Oracle data type RAW converts to RAW in Oracle Enterprise stage.
- B. Oracle data type NUMBER(15, 0) converts to INT32 in Oracle Enterprise stage.
- C. Oracle data type NUMBER converts to DECIMAL(38, 0) in Oracle Enterprise stage.
- D. Oracle data type NUMBER(6, 0) converts to INT32 in Oracle Enterprise.
Your job uses the MQ connector stage to read messages from an MQ queue. The job should retrieve the message ID into the MessageID field and parse the payload into two fields: Name is to get the first ten characters, Description is to get the remaining characters.
What will accomplish this?
- A. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; column is Description as VarBinary 200; third column is Name as Binary 10.
- B. First column is MessageID as Binary 24; second column is Name as Binary 10; select WSMG. MSPAYLOAD data element; third column is Description as VarBinary 200; select WSMG.MSPAYLOAD data element.
- C. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name; select WSMG.MSPAYLOAD data element; third column is Description; select WSMG.MSPAYLOAD data element.
- D. First column is MessageID; select the WSMQ.MSGID data element for the Message ID field; second column is Name as Binary 10; third column is Description as VarBinary 200.
Which of the following describes what happens when Runtime Column Propagation is enabled?
- A. An input column value flows into a target column only if it matches it by name.
- B. An input column value flows into a target column based on its position in a Schema file.
- C. An input column value flows into a target column based on its position in the input row. For example, first column in the input row goes into the first target column.
- D. An input column value flows into a target column only if it is explicitly mapped to it.
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. five
- B. four
- C. two
- D. three
Which of the following describes a type two update in a Slowly Changing Dimensions (SCD) stage?
- A. An update that retains the existing column value in a list and adds the new value to the list.
- B. An update that replaces the existing column value if a specified condition is satisfied.
- C. An update the retains the existing column value in an historical row and creates a new row with the new value.
- D. An update that overwrites the existing column value.
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