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COBOL - Data Division

Data names must be defined in the Data Division before using them in the Procedure Division. They must have a user-defined name. reserved words cannot be used. Data names give reference to the memory locations where actual data is stored. They can be elementary or group type.


The following example shows valid and invalid data names −
  1. Valid Name

    • COUNT

    • B1000

    • 1000B

  2. Invalid Name
    • MOVE (Reserved Word)

    • ADD (Reserved Word)

    • 100 (No Alphabet)

    • 100+B (+ is not allowed)

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