Why fact table is in a normal form?

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What are fact, dimension, and measure?

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If I have table T1 and table T2 T1 has 250 cols and 10,000 rows T2 has 2 billion rows and 10 cols Which one would be Fact table and which one would be Dimension table and why ?

3 Answers   Extech, Principal Finance,

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What are the vaious etl tools in the market?

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Hyperion is the one of the tool in data ware house. Its an olap tool. Why you cant display that tool?

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Explain have you ever been in a real dilemma at work? What did you do to get out of it?

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What is Drill by? drill through?

1 Answers   CMC, iFlex,

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4.Explain Snowflkeschema ?

6 Answers   EDS, HCL, IBM, iFlex, TCS,

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Where the data cube technology is used?

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What is the difference between aggregate table and materialized view?

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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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What are the different problems that ?Data mining? can solve?

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