Database Systems Competitive Exam MCQs – Practice Test 13 (Chapter 21)
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Download the "SQL Concepts and Queries MCQs" App: Specification that prohibits the insertion of a null value for the attribute, is called; MCQ with answers: null value, like null value, not null value, and as null value. Solve Database Users and Administrators Quiz Questions, download Google e-Book (Free Chapter) for cloud DBMS systems.
MCQ 61: None of the widely used database systems supports subqueries in the:
MCQ 62: The specification that prohibits the insertion of a null value for the attribute, is called:
MCQ 63: Foreign keys can be specified as part of the SQL:
MCQ 64: Wherever a view relation appears in a query, it is replaced by the stored:
MCQ 65: The join preserves tuples only in the relation named before the left outer join operation, is to be:
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