Database Systems Practice Tests
Database Systems Online Tests
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MCQ 1: In a natural join if the two are equivalent in an expression, is said to be
MCQ 2: The predicate of a selection statement may include comparisons between
MCQ 3: In the relational algebra, the select, project, and rename operations are known as
MCQ 4: The operation of projection is a
MCQ 5: The projection that allows extension of operations, i.e. arithmetic and string functions to be used in the projection list, is known as
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