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February 25, 2015

2/25/2015 05:47:00 PM

  • Plsql Questions-3

  • 50)a(a. All employees have a manager.)
    51)b(b. A non-pair wise comparison produces a cross product.)
    52)b. A WHERE clause cannot be used to restrict groups.
    53)c. Produces one result from many rows per group.
    54)d. No change is needed.
    55)d. The statement will not execute.
    56)b. UPDATE
    57)b. Allows you to choose columns.
    58)b. 2
    59)b. SELECT hire_date
    FROM worker
    ORDER BY hire_date;
    60)c. division_table(13).loc:=‘Boston’;

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