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Explain about etl data integration software?
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WHY CANT WE SEE THE DATA IN DATASET
Explain and compare etl & manual development?
Can there be sub steps of etl steps?
what are the different Reporting and ETL tools available in the market?
how do u identify the changed records in operational data?
how to join two tables without using joiner transformation .advantages of joiner over lookup and vice versa.
What is tracing level?
Mention few test cases and explain them?
how do u automate Extraction process?
how do u really know that paging to disk is happening while u are using a lookup transform?
What are the differences between sql override and update override?
1.Identify and discuss the problems which are occurred during data quality verification for the single-source and multi-source problems. 2.Testing has very important role in DWH. In ETL testing phase, how can we perform the integration testing and regression testing? 3.What are the perquisites of system testing and regression testing in ETL phase?
Teradata 
