Database Systems MCQs – Practice Test 57 (Chapter 15)
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The "Introduction to SQL MCQs" App Download: SQL implicitly extracts the value from the single attribute of the single tuple in the relation, and returns; MCQ with answers: false, true, unknown, and value. Solve Concurrency Control Concept in DBMS Quiz Questions, download Google e-Book (Free Chapter) to master database technology.
MCQ 281: Any attribute that is present in the having clause without being aggregated must appear in the:
MCQ 282: SQL implicitly extracts the value from the single attribute of the single tuple in the relation, and returns:
MCQ 283: The symbol that can be used in the select clause to denote 'all attributes', is:
MCQ 284: In SQL, identification of patterns are:
MCQ 285: The constraint on an attribute specifies that the null value is not allowed for that attribute, is known to be:
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