What is the definition of cube in datawarehousing?
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What are the different types of data warehousing?
What is the difference between dependent data warehouse and independent data warehouse?
what are the similarities between ROLAP and MOLAP
How did you plan your Data ware house project?
Explain difference between snow flake and star schema. What are situations where snow flake schema is better than star schema to use and when the opposite is true?
Why null values are mapped as 0 in fact tables?
Explain why denormalization is promoted in universe designing?
How do you define data block size?
Explain techniques of error handling - ignore , rejecting bad records to a flat file , loading the records and reviewing them (default values)?
what are the others of "bad files" and "discard files" when using sql*loader?
What is a general purpose scheduling tool?
Explain what is a cube in data warehousing concept?