question for pl/sql
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Thread: question for pl/sql

  1. #1
    Join Date
    Jul 2001
    Posts
    14

    Wink

    Hi

    I am beginner and newcommer here, anybody can give answer for the following question?

    Thanks,
    Grace


    Which of the following statements regarding column subqueires is true?

    a. A pair wise comparision produces a cross product.
    b. A non-pair wise comparision produces a cross product.
    c. In a pair wise query, the values returned from the subquery are compared individually to the value in the outer query.

  2. #2
    Join Date
    Jul 2001
    Location
    Karachi, Pakistan
    Posts
    3

    Smile

    Hi Grace,
    according to me the correct answer is b..
    coz cartisian product is a non pair wise product which multiplies all rows of a column to all rows of another column ..
    take care
    Faraz A. Farooqui
    Oracle Consultant
    InfoPak, SBS
    92-21-5862318
    92-21-5862319

  3. #3
    Join Date
    Jul 2001
    Posts
    14
    Hi Faraz,

    Thanks & Regards,
    Grace

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