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Data warehouse data are organized and summarized by table, such as CUSTOMER and ADDRESS.
Q2: The statement SELECT * FROM T1,T2 produces
Q10: Dial-back systems help control unauthorized access to
Q21: Operational data are commonly stored in many
Q55: A distributed database is composed of several
Q58: The ,also known as the information resource
Q67: A cost-based optimizer uses a set of
Q68: POS devices,bar code readers,and OCR devices are
Q70: Programs such as Windows Vista and Unix
Q72: In order to be useful,raw accounting data
Q76: A sequence is not associated with a