What is data merging, data cleansing and sampling?
datacleaning means duplicate data removing,meging means
combing data from sql,oracle and other ets and dumped into
dataware house
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Explain what are the steps to build the data warehouse?
What is junk dimension? What is the difference between junk dimension and degenerated dimension?
What are the approaches used by optimizer during execution plan?
Explain what are the different types of join operations?
How to pivot row data using informatica?
Explain what is a three tier data warehouse?
why oracle is the best database for data warehousing?
What is Data purging?
What is partitioning? What are the types of partitioning?
How do you call a module named �testmod.cfm� with the parameters param1=�yes� and param2=5?
What is a star schema? Why does one design this way?
Explain why should you put your data warehouse on a different system than your oltp system?