A virtual table whose rows do not exist until they are derived from the base table(s)is called a(n)___________.
Correct Answer:
Verified
Q50: A method to process a query on
Q51: A view that can be used only
Q52: Typically in a hierarchical form,which of the
Q53: (Access)When implementing a hierarchical form,which of the
Q54: Figuer:
CUSTOMER (primary key = CID)
CNAME is
Q56: Figuer:
CUSTOMER (primary key = CID)
CNAME is
Q57: To use a view in a query
Q58: To be updatable,a single-table view cannot contain
Q59: To define a view,SQL provides the _
Q60: One of the advantages of views is
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