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  1. #1
    Aug 2007
    16,164

    >>

    --------------------------------------------------------------------------------

    ʿ
    ʡ ȡ ... . . .
    . . . ʡ . .

    : . ɡ .

    : . : ɡ . ɡ . .

    : . . ʡ ǡ .

  2. #2
    Aug 2007
    16,164

    . ߡ ϡ .

    Compound Key . ء . ʡ . . . Composite Key Compound Key.

    Primary Key ʡ MS Access MS Access ߡ . ɡ ǡ . .

  3. #3
    Aug 2007
    16,164

    . . .

    ա . .

    "--" One-to-Many ѡ "--" .

    "--" Many-to-Many . "--" "--". ɡ .

    ߡ "-"One-to-One . ϡ .

  4. #4
    Aug 2007
    16,164

    Multimedia. ɡ (ѡ ʡ ʡ ...) .

    . .

    ѡ .

    ʡ . ɡ . ʡ ѡ ʡ .

  5. #5
    Aug 2007
    16,164



    Query ˡ ѡ . ɡ ǡ .

    . .

    .

    ɡ .

    . ء . ʡ . . . .

    Primary Key ʡ Access. Access ߡ ɡ . ɡ ǡ . .

  6. #6
    Aug 2007
    16,164

    Redundancy
    . .

    ʡ .

    ʡ . .

    . ʡ .


    Referential Integrity

    Referential Integrity ϡ .

    "--" ѡ . ߡ .


    Authentication

    . PGP .


    Transactions

    ϡ .

    . . ʡ .

    ɡ .

    Data Recovery

    . ɡ (Tapes) (Floppies)
    (Zip Drives) (Re-Writable CD's) .

    ڡ . 750 ʡ 200 ʡ 1.44 ʡ 80 ʡ ɡ ɡ .

  7. #7
    Aug 2007
    16,164

  8. #8
    Aug 2007
    16,164

: 1 (0 1 )

  1. : 0
    : 03-08-2011, 01:23 AM
  2. : 1
    : 08-05-2008, 10:04 PM
  3. : 1
    : 08-05-2008, 09:34 PM
  4. : 1
    : 08-05-2008, 09:10 PM

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