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Datastage Interview Questions and Answers

Data Warehousing
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51. What is sequencer?
  It sets the sequence of execution of server jobs.
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52. What is merge (plug-in) stage?
  This stage is used to merge the two sequential files.
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53. What are the types of views in datastage director?
  There are three types of views in datastage director :
  • Job view
  • Log View
  • Status view
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54. How do you implement union query in DataStage?
  We can override the automatic generated SQL queries in any Passive Stage.
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55. How to join the multiple sources?
  Using the Collector stage in Server jobs ,we can join multiple sources.
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