Why is chameleon method used in data warehouse?
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What is a junk dimension? What is the difference between junk dimension and degenerated dimension?
The same tier?
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
What are the types of SCD?
What is the difference between junk dimension and degenerated dimension?
What is Analysis Services?
Which is the optimized method of extracting the data.
What is metadata in context of a datawarehouse and how it is important?
What is meant by metadata in context of a data warehouse and how it is important?
I know of using applysimple, but there are other ways too?
waht is the advantage of infoset query
What is execution plan?
Teradata 
