Why null values are mapped as 0 in fact tables?
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What is ?Data mining??
Explain the hierarchies level data warehousing.
Which columns go to the fact table and which columns go the dimension table?
What is staging area?
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 347 what is hybrid slowly changing dimension?
What is an er diagram?
How many types of facts and what are they?
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Why denormalization is promoted in universe designing?
Explain what are non-additive facts in detail?
explain about dirty dimension?
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