Learn COBOL-VARIANTS with Real Code Examples

Understand COBOL syntax and divisions

Learn file handling and data structures

Practice batch job and procedural programming

Advance to object-oriented COBOL and database integration

Explore modern variants and mainframe ecosystem

Week 1: Basic COBOL syntax and arithmetic

Week 2: File I/O and data manipulation

Week 3: Conditional logic and loops

Week 4: Database access and batch job orchestration

Week 5: Modern COBOL features and optimization

Explain divisions and sections in COBOL.

How do you handle file I/O in COBOL?

Describe PERFORM and EVALUATE statements.

How would you modernize a legacy COBOL application?

What are differences between procedural and OO COBOL?

IDENTIFICATION DIVISION -> program metadata

ENVIRONMENT DIVISION -> config and file info

DATA DIVISION -> declare variables and files

PROCEDURE DIVISION -> main program logic

PERFORM paragraph -> execute logic block

Murach's Mainframe COBOL

COBOL for the 21st Century

Modern COBOL Programming

Beginning COBOL for Programmers

COBOL: From Novice to Professional

COBOL Basics and Syntax

File Handling in COBOL

Batch Processing and JCL Integration

Object-Oriented COBOL Programming

COBOL Integration with Databases and APIs

https://www.ibm.com/docs/en/cobol

https://www.microfocus.com/documentation/visual-cobol/

https://gnucobol.sourceforge.io/

Stack Overflow COBOL tag

Micro Focus COBOL Community

IBM Developer COBOL forums

COBOL subreddit

GnuCOBOL mailing list

COBOL subreddit

Micro Focus COBOL Community

IBM COBOL forums

Stack Overflow COBOL tag

GnuCOBOL mailing lists