IS 10681 : 1983 /ISO 1989 : 1978 Programming Languages - Cobol

UDC 661.306 :800.92                                          LTD33

Reaffirmed 2019

National Foreword

This Indian Standard, which is identical with English version of ISO 1989 : 1978 ` Programming languages - COBOL' issued by the International Organization for Standardization (ISO), was adopted by the Indian Standards Institution on the recommendation of the Computer Business Machines and Calculators Sectional Committee and approved by Electronics and Telecommunication Division Council,

The English version of ISO standard itself endorses and consists of the ANSI Standard x3.23-1974 `Programming languages - COBOL`.

The form and interpretation of the COBOL language specified in this standard promotes a high degree of computer independence in order to permit its use in a variety of automatic data processing systems.

The organization of the COBOL specification is based on a functional processing concept, The standard defines a Nucleus and 11 functional processing modules as follows:

Table Handling

Sequential Input-Output

Relative Input-Output

Indexed Input-Output

Sort-Merge

Report Writer

Segmentation

Library

Debug

Inter-Program Communication

Communication

Each module contains either two or three levels in all cases, the lower levels are Proper subsets of the higher levels within the same module. Nine modules contain a null set as their lowest level.