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FILE-CONTROL paragraph for the relative files:
The normal format for the SELECT clause for a relative file is as shown below.
SELECT file-name ASSIGN TO implementor-name
[; FILE STATUS IS data-name-2]
Whether the file must be used successively or randomly, must specified through the word SEQUNTIALLY or RANDOMLY in the access mode clause the clause ACCESS MODE IS DYNAMIC it represents that the file is accessed sequentially and / or randomly in the PROCEDURE DIVISION.
OPEN STATEMENT: Whenever a READ or a WRITE operation is executed on a file, then it should be open. The opening of a file may be completed with the help of the OPEN verb. With
Rules of read statements: The next record is identified according to the rules as shown below: (i) Whenever the READ NEXT statement is the initial statement to be executed
Example of read statement: Illustration: READ OLD-MASTER AT END MOVE ZERO TO END-OF-RECORDS. As a result of this statement, generally the next record from the OLD-MAST
INDEXED TABLES: The OCCURS clause that is used to define tables can optionally have an INDEXED phrase. This phrase involves the names of data items which are to be used as sub
Rules for Simple sort verb: The work file is to be defined by a sort elaboration entry (SD entry).The format of SD entry is as shown below. The rules below should be taken
Identification Division: The Identification Division is the first division of each and every COBOL source program. The paragraph PROGRAM-ID is necessary in most of the mac
MERGE VERB WITH OUTPUT PROCEDURE: Like the sort verb, the merge verb can also have an output procedure. The syntax of the MERGE verb is as shown below: The r
Valid and Invalid Word - Cobol words: Valid Word Invalid Word & Reason emp-sal -pay ( it starts with a hyphen) TOTAL MARK (blank space em
PROGRAM FOR IF -ELSE: We have to write a program to check whether the given number is ODD or EVEN. You can use IF..ELSE. Identification division. Program- id. IfElse.
Major difference between file and array how does record read from array and file why we are not preparing array for real time
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