Explain what are the various transformation available?

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how can one transfer LOB and user defined data from oracle to warehouse using ETL informaticabecause

0 Answers   iGate,

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Explain datawarehousing?

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Hi Guys, I have been to L& T last week ..Please find the questions mentioned below 1)Slowly changing dimension types 2)DML statement 3)DDL statement 4)write a syntax to create database 5) differences between count(*) and count(column) 6) differences between union and union all 7) what is decode 8) what is NVL 9) Arrange the values in ascending order 10,5,20,15,null 10)Primary and surrogate key 11)what is group by clause does? 12)what is difference between truncate and delete 13)what is difference between OLAP and OLTP ? 14)Architecture of Datawarehouse 15)how do you test the data validation from source as (flat file and xml) to staging tables. 16)what is shedule and time bound the mentioned above question asked in two rounds.all the best

2 Answers   L&T,

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How to test report in reportnet?

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Explain what is the difference between view filter and report filter?

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Code the tables statement for a single-level (most common) frequency?

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Is there any difference in testing database and data ware housing?

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What is the difference between datawarehouse and bi?

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Suggest a good author for hyperion in data warehousing?

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Explain the hierarchies level data warehousing.

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What are various warehousing tools?

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