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Transaction file:
A transaction file is a file which contains new records those changes to old records which are used to update the master file.
The problem of file updation can be defined as shown below:
OCCURS CLAUSE - PROGRAM: We have to write a program to demonstrate the occurs clause. Get names of the students and show them on the screen. identification division.
Illustration of if- else statement: IF OK-BALANCE NEXT SENTENCE ELSE MOVE 2 BALANCE-CODE In this illustration, the OK-BALANCE is a condition name. No action is specific if
Transaction file : A transaction file is a file which contains new records those changes to old records which are used to update the master file. The problem of file updatio
Illustration of Divide verb: (a) DIVIDE 5 INTO A. If the value of A is 20, then after execution of this statement the value of A will be 4. The older value of A will be los
PROCEDURE DIVISION statements for the relative files: The statements OPEN, CLOSE, READ, WRITE and REWRITE that are available for sequential files are also available for the re
Example of Class condition: Let the BASIC-PAY be a data name in the card record defined with picture 9(5) V99. By reading the card we can test the value of the BASIC-PAY to ma
SPECIAL-NAMES: This paragraph is used to associate some hardware names to the user-specified mnemonic names. This paragraph is elective in all compilers. The format of this pa
Example of File-control: The assign clause assigns a specific physical peripheral device name to a file. The physical peripheral device are machine-dependent. We use the devic
CLASS CONDITION: The class condition establishes whether or not the value of the operand is numeric or alphabetic. The operand is numeric if it contains only the digits 0 t
B (Blank Insertion) : The occurrence of a B anyplace in the picture will insert a space character in the edited data. There can be more than one B in the picture. Examples:
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