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

Occurs, what does it used

what does it used

Rick, How do I move a single QUOTE to a field or set the value clause? "''...

How do I move a single QUOTE to a field or set the value clause? "''" does not work?

Concept of a two-dimensional table, Concept of a two-dimensional table: ...

Concept of a two-dimensional table: Concept of a two-dimensional table can be easily extended to tables having three or more dimensions. The Handling of tables up to three dim

Program of occurs clause, OCCURS CLAUSE - PROGRAM: We have to write a ...

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.

Example of nested if statement, Example of Nested if statement: Illus...

Example of Nested if statement: Illustration: Consider the following sentence The nested IF sentence holds two IFs and one ELSE. The IF-ELSE couple has been marke

Statements for sequential files , STATEMENTS FOR SEQUENTIAL FILES: A b...

STATEMENTS FOR SEQUENTIAL FILES: A basic operation on a file includes the reading and writing of its records. Whenever the file is sequential, there are three verbs for the

Rules for simple sort verb, Rules for Simple sort verb: The work file ...

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

Example of special-names - configuration section, Example of Special-names:...

Example of Special-names: Consider the illustration: Let the SPECIAL-NAMES paragraph be as shown: SPECIAL-NAMES. CHANNEL 1 IS PAGE-TOP. The Channel is related with the t

Program for inventory , PROGRAM FOR INVENTORY  We have to write a progr...

PROGRAM FOR INVENTORY  We have to write a program to update the inventory file. Consider 2 files,viz, invfile an tranfile. Invfile has 3 fields pno,name,qty. Tranfile has 3 fil

File-control paragraph for the relative files, FILE-CONTROL paragraph for t...

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-nam

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