What is called data cleaning?
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What is the difference between a W/H and an OLTP application?
What are the approaches used by optimizer during execution plan?
What are Non-additive facts?
what is query optimizer? what are different types of optimizer s supported by oracle ?
Who needs data warehousing?
What is DTM session?
Explain degenerate dimension table?
Explain what are the advantages data mining over traditional approaches?
What is the difference between olap and datawarehosue?
What is the limit to the number of sources and targets you can have in a mapping?
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Explain in detail abt measure objects? And what is the use of it? How to create it?