Cobol

cobol

Common Business Oriented Language. All batch applications like payroll, report processing, insurance and banking are developed in cobol. con be used for online too CICS

CICS

Customer Information Control System. Makes the batch operating environment interactive through online systems.

COBOL uses

It also supports 80 percent of in-person credit card transactions, handles 95 percent of all ATM transactions, and powers systems that generate more than USD 3 billion of commerce each day.¹ Due to its superior stability and processing power, it continues to play an integral role in helping businesses maintain apps and programs in existing architectures.

Features of COBOL

Easy to understand, easy to maintain, structured programming, high computing capacity, better understanding of application programs, more readability.

types of cobol

PC based: small applications, MF cobol, IDE - GNUCOBOL compiler
Real mainframe cobol vs- visualize source- large applications. VS COBOL II

coding sheet

1 to 6: line numbers
7: continuity (-), comment (*), starting a new page (/), debugging lines (D)

8 to 11: Area A- division, section, paragraph, 01,77 declarations
12 to 72: Area B - All other declarations/ statements here
73 to 80: identification field. ignored by the compiler

IBM terminal

3270

Language Structure

cobol program: Division→section→paragraph→sentence→statement