At this time,there is no major relational database vendor that provides support for the multidimensional data model used by data warehouses.
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Q3: ROLAP (Relational OLAP)and MOLAP (Multidimensional OLAP)are similar
Q4: The two tiered data warehouse architecture incorporates
Q5: HOLAP (Hybrid OLAP)involves both relational and multidimensional
Q6: In a star schema,dimension tables may violate
Q7: The level of detail and amount of
Q9: Data in a data warehouse is usually
Q10: An oper mart is a just-in-time data
Q11: Data in a data warehouse is time-variant,which
Q12: Time-series data in a data cube may
Q13: A data warehouse refers to a central
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