hari

• Dec 29th, 2005

 

File opening modes are

Input mode , output mode, extend mode, inputoutput mode.

Inputmode--------  "Read" the file

outputmode--------"write" the record.

extend mode--------"appeand" the records.

i/o mode-------------"read or write" any thing.

umapathi

• Jul 21st, 2006

 

File opening modes are

Input mode , output mode, extend mode, inputoutput mode. corresponding disposition codes in JCL.

Inputmode--------  "Read" the file       SHR    (DISP)

outputmode--------"write" the record.   NEW

extend mode--------"appeand" the records.   MOD

i/o mode-------------"read or write" any thing.  NEW 

pl correct me if i am wrong.

Anki

• May 7th, 2015

 

For I/O mode:
DISP = OLD
It cant be new, as if the file does not exist, we cannot read it.

nder

• Aug 2nd, 2016

 

3 modes.
Read, Write, Read-write depending on the data processing.

Anand

• Oct 25th, 2016

 

Read - INPUT - SHR, OLD
Write - OUTPUT - NEW, OLD
Rewrite - IO - OLD
Append - EXTEND - MOD