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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.
Literals: The actual values can too appear in a program. These values are termed as literals. For illustration, the statement MOVE 0 TO TOTAL indicates that the value zero wil
Selection of file Organization: While designing a file, the programmer should select an appropriate association for a file. The order in which the choice is to be made is as s
INPUT AND OUTPUT PROCEDURE IN SORT STATEMENT: The common format of the SORT statement can write as shown below: The format of the RELEASE statement is as shown be
There are some restrictions when these procedures are used. (i) The Procedure should not contain any SORT/MERGE statement. (ii) An explicit transfer of the control outside
Program for Sequential File Creation & Rewriting We have to write a program to create a Length file with just two fields: l (Length) and l-c (Length-Code). Add a few records.
Record Description for the Variable-length Records: When the variable- length records consists of records of various lengths, each record type is to be explained at level 01 f
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.
PICTURE specification: The size of a group item is equivalent to the total of the sizes of all the subordinate elementary items. The group item class is alphanumeric. The i
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
Comparison of the Numeric Operand with Nonnumeric Operand: The numeric operand can be compared to the nonnumeric operand subject to the restrictions which are as follows.
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