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(a) Describe the significant difference between SQL-92 and SQL-99 in terms of data warehouse perspective. (b) State the

Posted: Sun May 15, 2022 11:52 am
by answerhappygod
(a)
Describe the significant difference between SQL-92 and SQL-99 in
terms of data warehouse perspective.
(b)
State the number of grouping sets and illustrate the output for
the following SQL query;
(c)
What is metadata? Explain the importance of metadata in data
warehouse.