Database Systems Certification MCQs – Practice Test 3 (Chapter 19)
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MCQ 11: The query languages are terse and formal, but they illustrate the fundamental techniques for:
MCQ 12: Operation that outputs pairs of rows from the two input relations that have the same value on all attributes that have the same name, is known as:
MCQ 13: A set of operations in a query language that take one or two relations as input and produce a new relation as their result, is known to be:
MCQ 14: A pictorial depiction of the schema of a database that shows the relations in the database, is known to be:
MCQ 15: Relational operations can be applied to the results of queries as well as to the:
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