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

IMS, Can u please let me know how can i use SSA''s in IMS while fetching se...

Can u please let me know how can i use SSA''s in IMS while fetching segments. Thanks, Rajesh

Comparison of the numeric operand with nonnumeric operand, Comparison of th...

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.

Conditions-name condition, CONDITIONS-NAME CONDITION:   The condition...

CONDITIONS-NAME CONDITION:   The condition name is an entity which itself is a condition and these can have either a true or false value. Though, a condition name cannot be d

Character set - cobol programming, Character Set: To study any languag...

Character Set: To study any language, first one should know the alphabets of the language and they are termed as character set in general. There are 50 different characters in

Rules of move verb, RULES OF MOVE VERB:  The Data movement is managed ...

RULES OF MOVE VERB:  The Data movement is managed by the rules which are as shown below: (a) The contents of the identifier - 1 or the value of the literal - 1 is moved to

Sign condition - cobol programming, SIGN CONDITION:   The sign condit...

SIGN CONDITION:   The sign condition establishes whether or not the algebraic value of an operand is negative, positive or zero. The operand can be either the numeric identif

Example of read statement, Example of read statement: Illustration: ...

Example of read statement: Illustration: READ OLD-MASTER AT END MOVE ZERO TO END-OF-RECORDS. As a result of this statement, generally the next record from the OLD-MAST

Example of condition names, Example of condition names: The illustrati...

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

File volatility and file interrogation, File volatility: File volatili...

File volatility: File volatility associates to the number of times the updating of records are needed during some time period. File interrogation: Some files hold re

Structure of a cobol program, Structure of a COBOL Program: Every COBO...

Structure of a COBOL Program: Every COBOL program should have the 4 divisions in the order in which they are specified below: 1. Identification division 2. Environment D

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