Procedure division statements for the indexed files, COBOL Programming

Assignment Help:

PROCEDURE DIVISION statements for the indexed files:

All the statements which are available for a relative file are also available for an indexed file.

READ STTATEMENT :

When either the RANDOM or DYNAMIC access mode is specified or the records are to be read in a random manner, the syntax is as shown below:

READ  file-name RECORD  [  INTO  IDENTIFIER  ]

           [  ; KEY   IS data-name ]

           [  ; INVALID  KEY  imperative-statement  ]

The data name in the KEY IS phrase should be either the prime key or the alternative key item. If the phrase is not specified, then the prime key is supposed. Let consider PERSONNEL be an indexed file and let EMP-NO be the prime key and NAME be the alternative key. 

 


Related Discussions:- Procedure division statements for the indexed files

Divide verb, DIVIDE VERB: The aim of the DIVIDE verb is to divide one ...

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:

Reserve clause and organization/access clause, RESERVE clause: This cl...

RESERVE clause: This clause indicates the number of buffers to be used for the file. Integer-1 specifies this number. ORGANIZATION/ACCESS clause: These two clause

Sequential files with the variable-length records, SEQUENTIAL FILES WITH TH...

SEQUENTIAL FILES WITH THE VARIABLE-LENGTH RECORDS: The Magnetic - tape or disk files can hold variable-length records. In this situation the file can have records with various

Example of constructing an arithmetic expression, Example of constructing a...

Example of constructing an arithmetic expression: An arithmetic expression may be proceeded by a + or - sign. These operations are known as unary + or unary - operators. Il

Class condition - cobol programming, CLASS CONDITION:   The class con...

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

Add verb, ADD VERB: The ADD Verb can be used to find the sum of two or ...

ADD VERB: The ADD Verb can be used to find the sum of two or more numbers and to store the sum.  The ADD verb takes any one of the two forms as shown below:

Input and output procedure in statement, INPUT AND OUTPUT PROCEDURE IN SORT...

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

Example of sign condition , Example of Sign condition: The illustratio...

Example of Sign condition: The illustration below describes the use of the sign condition. Illustration:     77  BALANCE  PIC  S9 (6) V99.       .       .     I

File description- fixed-length records, FILE DESCRIPTION- FIXED-LENGTH RECO...

FILE DESCRIPTION- FIXED-LENGTH RECORDS: The normal characteristics of a file are explained in the file description (FD) entry of the DATA DIVISION.

What are name the divisions in a cobol program, Name the divisions in a COB...

Name the divisions in a COBOL program are given below DENTIFICATION DIVISION DATA DIVISION ENVIRONMENT DIVISION PROCEDURE DIVISION.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd