Database Systems MCQs – Practice Test 7 (Chapter 21)
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Download the "SQL Concepts and Queries Quiz" App (Android & iOS): A view is updatable, if any attribute not listed in the select clause can be set to null and it does not have a constraint of; MCQ with answers: not null, unknown, null, and union. Study Join Expressions Quiz Questions, download Google Book (Free Chapter) for DBMS virtual instruction.
MCQ 31: In rollback work, the database state is:
MCQ 32: A view is updatable, if any attribute not listed in the select clause can be set to null and it does not have a constraint of:
MCQ 33: Virtual relation is computed by executing the query whenever the virtual relation is:
MCQ 34: If a tuple inserted into the view does not satisfy the view's where clause condition, the insertion is:
MCQ 35: We define a view in SQL by using the command:
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