What is grain of fact?


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More ETL Interview Questions

how do u handle performance issues in Informatica . where can u monitor the performance ?

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Explain about etl data integration software?

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Do we need an ETL tool? When do we go for the tools in the market?

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Mention few test cases and explain them?

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what is the advantage of persistent cache? when it should be used?

2 Answers  






how would u estimate the size of Aggregator transform data and index cache?

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What is ROWID explain ?

2 Answers   Wipro,


What is Data Vault???

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What is etl process? How many steps etl contains?

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How to load Session Statistics (Workflow name, TgtRows, Rejected Rows, SessStartTime,SessEndTime..)into a database table ?? Another Question: I want to pass values from oracle table or Flat file in Mapping parameter/Variable.. What is the method for that..Please provide me the solution step by step

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explain the methodology of Data Warehousing?(Polaries)

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what are the different Reporting and ETL tools available in the market?

3 Answers  


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