Mainframe COBOL Developer Training By Anil Polsani

Explore how Cobol serves business logic on mainframe, and learn the four divisions—id, environment, data, and procedure—and how to build a Cobol program skeleton for batch and online processing.

Master COBOL variable declaration for projects, including level numbers, group and elementary items, and picture clauses for numeric, alphabetic, and alphanumeric data.

Learn how to define and initialize variables in cobol, use the value clause, and apply accept and display statements for input and output in cobol programs.

In COBOL class 04 compute-practicals, students build simple programs using value, accept, compute, and display; learn debugging with spool logs, data and program separation, and append techniques for error handling.

Master the COBOL move statement: initialize variables, move data between input and output, perform group and corresponding moves, and handle numeric versus alphanumeric data and data truncation.

Learn how COBOL conditional statements work, focusing on if and else, evaluate, ladder logic, and nested if, with a gender-based title example and production quality considerations.

Explore COBOL conditional logic using if and evaluate, handle invalid data with error files or immediate correction, and master perform, go to, and exit for robust control flow.

Learn Cobol control sequences like perform and perform through, and master top-down and modular coding for project-style programs with main, 1000/2000/3000 paragraphs, auditing, and input/output.

Learn cobol file concepts, including sequential ps files and indexed csds clusters, and master file layouts, nicknames, and status handling for open, read, write, and close.

Master COBOL file concepts, including environment, data division, and working storage changes; learn open-read-write-close patterns, status handling, and matching and lookup logic for multi-file processing.

Learn how copy books in COBOL provide reusable file layouts stored in a copy library; create, include, replace group names, and compile with copy book references to expand code.

Learn to secure mainframe data and reduce memory use by applying usage class and comp family formats (character, binary, and packed decimal), including 88 level guidance for readability.

explain COBOL’s redefines feature, sharing memory across variables, proper usage with real-world examples; cover date formats, Y2K risks, and matching versus lookup logic in file processing.

This lecture explains occurs variable declaration in COBOL, including field and record reputation, fixed versus dynamic occurrences, and accessing data with subscripts and counters.

Cobol class 15 covers occurs-lookup logic to match a large input file with a static reference file by building a prebuilt lookup table and using efficient searches.

Explore the COBOL call statement to implement sub programs, compare static and dynamic calls, and learn data transfer via call by reference using linkage and copybooks.

Explore string handling in cobol with inspect for counting and replacing characters, referential modification for substrings, and subprogram practicals, including static versus dynamic calls and data passing.