What is the difference between power center and power mart?

0 Answers  

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Why should we use data ware housing and how can you extract data for analysis with example?

0 Answers   TCS,

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What is data mart in data warehouse?

0 Answers  

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What is the difference between star and snowflake schemas?

0 Answers  

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How to improve session performance in aggregator transformation?

0 Answers  

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What is the difference between Datawarehouse and OLAP?

0 Answers  

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What is hash partition?

3 Answers   TCS,

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What is MDX?

2 Answers   TCS,

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suppose data are coming from different locations and those data will not change . is there any need to use surrogate key ?

3 Answers   Oracle,

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What is query panel?

1 Answers  

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What is difference between query studio and report studio?

0 Answers  

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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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