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  1. What is mapping
  2. What is lookup table
  3. What is meta data? Explain? Where it is used
  4. How did you reconcile source with target
  5. What modeling tool do you use
  6. How do you view log file for a particular job
  7. What is isolation level and when do u use them
  8. What are the different database update actions available
  9. How do u call shellscript/Batch file from DS
  10. How do u set a default value to a column if the column value is NULL
  11. How do you read Sequential file from job control
  12. What is pre-load in Hashed file
  13. How can we run same job in 1 day 2 times
  14. what is the difference between datasatge and datastage TX
  15. What is exact difference between Parallel Jobs and server Jobs
  16. What is Datastage trigger
  17. Explain the functionality of your current project
  18. Tell me What is the main advantage of Stage variables