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How to load the time dimension?
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what are relationships?
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What is a hash cluster?
What is real-time datawarehousing?
How many clustered indexes can you create for a table in dwh? In case of truncate and delete command what happens to table, which has unique id.
What are the other names given to data warehousing?
Explain why should you put your data warehouse on a different system than your oltp system?
how much memory space occupied real time project (roughly)?
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
How can we determine what records to extract?
What is loop in data warehousing?
What is batch processing?
Explain what are the different types of data warehousing?
Teradata 
