What should I have in mind when building olap solution from scratch?

0 Answers  

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What is the metadata extension?

0 Answers  

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Tell me what is full load & incremental or refresh load?

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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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Explain the difference between view and materialized view?

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I need to set predefined condition. How I do this?

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What is Star Schema?

0 Answers   Informatica,

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What is the difference between power center & power mart?

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What is ods (operation data source)?

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What is VLDB?

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What function should we use to display the value entered or selected by a user in response to a prompt?

0 Answers  

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WHAT IS FACT LESS FACT TABLE?

6 Answers   DBS, Polaris,

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