Rewrite statement - indexed files, COBOL Programming

Assignment Help:

REWRITE STATEMENT:

As in the situation of a relative file, the REWRITE statement needs that the file should be opened in the I-O mode, and if the SEQENTIAL access mode is specific, the value of the record key of the record being replaced should be equal to that of the record last from this file.

The INVALID KEY condition occurs in the cases as shown below:

(i) Whenever the record key does not match that of an existing record in the file.

(ii) For the SEQUENTIAL access, whenever the value of the record key is not similar to that of the last record read from the file. 

 

 


Related Discussions:- Rewrite statement - 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:

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 if- else statement, Example of If- else statement Illustrat...

Example of If- else statement Illustration:   IF   QUANTITY IS NUMERIC AND QUANTITY IS POSITIVE          MOVE ZERO TO ERROR-CODE. COMPUTE SALES VALUE=QUANTITY*RATE

Cobol program, Write a COBOL IF sentence to use the values of numeric var...

Write a COBOL IF sentence to use the values of numeric variables EXAM and COURSEWORK , both assumed to be with format PIC 999 and in the range 0 to 100 and to move the value:

Transaction file - file updation, Transaction file : A transaction file...

Transaction file : A transaction file is a file which contains new records those changes to old records which are used to update the master file. The problem of file updatio

Period or decimal point - edit characters for numeric data, .(Period or Dec...

.(Period or Decimal Point) : The period may be used to insert a decimal point and may not come into view more than once. Both the period and V cannot appear in similar picture

DBMS, Comparing features of oracle rdbms with Mysql

Comparing features of oracle rdbms with Mysql

Procedure division statements for the indexed files, PROCEDURE DIVISION sta...

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 :

Program for screen section, PROGRAM FOR SCREEN SECTION:  identificatio...

PROGRAM FOR SCREEN SECTION:  identification division.   program- id.   environment division.   data division.   working-storage section.   01  a pic 9(2) value

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