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Database Systems Competitive Exam MCQs – Mock Test 171
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The generated outputs of relational-algebra expressions do not have identities, which is used for
In queries that contain subqueries, a scoping rule is applied for
In the relational model, the process which involves decisions on what attributes we want to capture in the database, is
A database system provides a language named
The pattern generated by the example "_ _ _" would be matching string of
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