User-defined ________ can improve system performance because they will be processed as sets rather than individually,thus reducing system overhead.
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Q89: _ can be thought of as a
Q90: _ are extensions defined in SQL-99 that
Q91: The results of a _ join will
Q92: EXISTS will take a value of _
Q93: The _ clause is used to combine
Q95: _ and _ are very powerful database
Q96: _ use the result of the outer
Q97: SQL provides the _ technique,which involves placing
Q98: A _ is a collection of SQL
Q99: While triggers do run automatically,_ do not.
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