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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 following the FD entry for the file. The variable part is defined with the OCCURS...DEPENDING clause.
FD VARIABLE-FILE
RECORD CONTAINS 40 TO 92 CHARACTERS
BLOCK CONTAINS 933 TO 1024 CHARACTES
LABEL RECORDS AERA ATANDARDA
RECORDING MODE IS V
VALUS OF INDENTIFICATION IS "VARFILE".
01 VARIABLE-RECORD.
02 ACCOUNT-NUMBER PIC 9(6).
02 NAME PIC X(20).
02 NO-OF-PAYAMENTS PIC 9.
02 PAYMENTS OCCURS 1 TO 5 TIMES DEPENDING ON
NO-OF-PAYMENTS INDEXED BY TAB-INDEX.
03 DATE-OF-PAYAMENT 9(6).
03 AMOUNT-OF-PAYMENT 9(5)V99.
OCCURS CLAUSE - PROGRAM: We have to write a program to elaborate occurs clause. Get names and marks of the students and show them on the screen. identification division.
NONSTANDARD CLAUSES: The various clauses explained above are as per the ANSI standard. Also, most compilers provide for additional nonstandard clauses to meet the specific nec
INDEXED SEQUENTIAL FILES: In the indexed sequential files which are also known as indexed files, the records are stored in the sequence order generally in ascending order. In
DIVIDE VERB: The aim of the DIVIDE verb is to divide one number by the other and to store the result. There are few forms of this verb. One of its forms is as shown below:
WRITE statement: The WRITE statement for tape and sequential-disk files has the syntax shown below. WRITE record-name [ FROM identifier ] As a resu
Direct Organization: Besides the relative or indexed organization, also a direct access file can be designed to have what is termed as direct organization. In this organizati
CLOSE STATEMENT: When the processing of a file is completed, then the file may be closed. This is completed with the help of the CLOSE-verb. The form of the CLOSE statement is
MULTIPLY VERB: The Multiply Verb causes one or more multiplicands to be multiplied by the multiplier and to store the products. The form of the MULTIPLY verb is as shown be
FILE-CONTROL paragraph for the indexed files: The common format for the SELECT clause for a file is as shown below: SELECT file-name ASSIGN TO implementor -name
Example of condition names: The illustration below is of the use of the condition names 77 MARITAL-STATUS PIC 9 88 SINGLE VALUE IS ZERO 88 MA
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