When do we go for the tools in the market?
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what are the production issues in datastage?
What are the differences between sql override and update override?
Can there be sub steps of etl steps?
list and discuss two approaches for updation of target table in Informatica and how they are different.
Explain the use lookup tables and Aggregate tables?
Difference between flat files and relational sources?
What do you understand by the term ‘transformation’?
Identifying the bottlenecks in various components of Informatica and resolving them.
Explain about the data integration suite features?
Eliminating of duplicate records without using dynamic lookups
Is there any body who works on Pervasive Data Integrator (previously Data Junction)? Is there any scope also?
What is granularity? Please explain with example
Teradata 
