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IBM IBM Specialist A2090-421 Assessment: InfoSphere DataStage v8.5 Exams
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IBM A2090-421 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: DataStage Architecture and Fundamentals | - Core architecture concepts
|
| Topic 2: Performance and Optimization | - Parallel execution tuning
|
| Topic 3: Job Design and Development | - Building DataStage jobs
|
| Topic 4: Monitoring and Administration | - Job control and troubleshooting
|
| Topic 5: Data Connectivity and Integration | - Source and target systems
|
IBM Assessment: InfoSphere DataStage v8.5 Sample Questions:
Question 1
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_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".
B. 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".
C. 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".
D. 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".
Question 2
What are the three features of Information Server that allow you to deploy DataStage objects? (Select three)
A. dscc.exe
B. Designer Client Export
C. Information Server Manager
D. istool
E. $APT_COPY_TRANSFORMER
Question 3
What two data sources support direct lookups? (Select two)
A. Teradata
B. Oracle
C. ODBC
D. DB2
E. SqIServer
Question 4
A customer wants to select the entire order details for the largest transaction for each of 2 million customers from a 20 million row DB2 source table containing order history. Which parallel job design would satisfy this functional requirement?
A. Partition and sort the input to a Filter stage by customer number. Filter with the clause "MAX(transaction_amount)".
B. Partition on customer key, sort on customer key and transaction amount, remove duplicates on customer key.
C. Partition and sort the input to a RemoveDuplicates stage using the customer key and transaction amount columns. Remove duplicates on customer key.
D. Use a Sort Aggregator stage with calculated column based on the maximum value of transaction amount column.
Question 5
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. 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.
B. CFF does not support flattening for redefined fields.
C. Within CFF, use the Complex File Load Option window with "Flatten all arrays" option selected. CFF will handle flattening automatically.
D. 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.
Solutions:
| Question 1 Answer: A | Question 2 Answer: A,C | Question 3 Answer: B,D | Question 4 Answer: B | Question 5 Answer: A,D |
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