A data warehouse designer must define common business dimensions that will be used by a data analyst to narrow a search,group information,or describe attributes.
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Q2: Data warehouse data are organized and summarized
Q6: Advanced OLAP feature become more useful when
Q6: To provide better performance,some OLAP systems merge
Q7: The ROLLUP extension is used with the
Q8: By default,the fact table's primary key is
Q9: Decision support data are a snapshot of
Q12: Master data management's main goal is to
Q16: ROLAP and MOLAP vendors are working toward
Q18: Periodicity, usually expressed as current year only,
Q19: A star schema is designed to optimize
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