What is drill-through?
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Explain is fact table?
What is Cognos script editor?
What is a hash cluster?
how to find unique records in informatica level
What is the difference between er modeling and dimensional modeling?
What are the various tools? Explain name a few?
Why is chameleon method used in data warehouse?
How can we acheive correlated sub-query in designer?can anyone help me in this regard?
Explain why are oltp database designs not generally a good idea for a data warehouse?
Is it possible to have more than one row on the same table with the same foreign key?
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 is query optimizer? what are different types of optimizer s supported by oracle ?