Examlex
An entity instance of a subtype represents the same entity instance of the supertype.
Q6: In the figure below, the patient must
Q15: What are the valid indexes for the
Q17: The union of two sets is a
Q19: In _ programming, the programming is centered
Q19: A relation that contains no multivalued attributes
Q24: In an SQL statement, which of the
Q27: The attribute on the left-hand side of
Q43: Efficient database structures will be beneficial only
Q80: Count(*) tallies only those rows that contain
Q93: SQL is both an American and international