Database Management Systems Mcqs
Page No. 83
Which of the following operations need the participating relations to be union compatible?
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Which of the following operation is used if we are interested in only certain columns of a table?
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What is a relationship called when it is maintained between two entities?
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E-R model uses this symbol to represent weak entity set ?
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The statement in SQL which allows to change the definition of a table is
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It is possible to define a schema completely using
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Count function in SQL returns the number of
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