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The special operator used to check whether a subquery returns any rows is _____.
Q1: A shared lock produces no conflict as
Q2: _ is a term used to describe
Q23: Performance transparency ensures that the system finds
Q26: The first step in developing the conceptual
Q30: The combination of normalization and ER modeling
Q43: The primary objective in database design is
Q56: When you define a table's primary key,
Q61: In organizations that generate large numbers of
Q63: A subtype contains attributes that are common
Q63: A _ is the primary key of