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Q1: Group attributes are composites of other attributes.
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Q25: You are given an E-R diagram with
Q27: IDEF1X identifying connection relationships correspond to ID-dependent
Q47: In relational terms as defined by E.F.Codd,a
Q68: A SELECT statement used in a WHERE
Q76: Which of the following is true about
Q78: The SQL keyword IS NULL can be
Q80: The WHERE clause contains the condition that
Q89: In many-to-many relationships in a relational database