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COBOL Module on Z/OS - Mainframe [Beginner to Expert]

COBOL Programming Language on Mainframe

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COBOL Module on Z/OS - Mainframe [Beginner to Expert]

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About COBOL Module on Z/OS - Mainframe [Beginner to Expert]

Introduction to COBOL

COBOL Coding sheet

Coding rules, COBOL program structure

How to write a COBOL program

Compilation process: Compile, Linked Edit, Run JCL

IGYRCRCTL,IEWL,STEPLIB

Discussed about DIVISIONS: IDENTIFICATION, ENVIRONMENT, DATA and PROCEDURE DIVISION

Working-Storage section

Level Numbers

01 - 49

66 renames

77 Elementary items

88 Condition names

VALUE and VALUE ALL clause

Discussed about COBOL verbs

Abends

Variables declaration

Move VERB and OF Clause

Editing picture clauses

Arithmetic verbs(ADD, SUBTRACT, MULTIPLE, DIVIDE and COMPUTE)

Relational operators

Logical operators

Conditional statements (IF and Evaluate)

Sign and class conditions

String, Unstring and Inspect

Perform: Inline and Outline Perform

Simple perform

Perform with N times

Perform with Until condition

Perform with Varying

Perform with THRU

Differences between Next sentence and Continue verbs

Differences between STOP RUN, EXIT PROGRAM and GOBACK

File Handling in COBOL:

How to read the data from Sequential file and display them in SPOOL

How to read the data from sequential file and writing them into Entry Sequenced Dataset

How to read the data from sequential file and writing them into multiple files based on different conditions

Handling KSDS: Sequential Read, Random and Dynamic Reads,Write,Rewrite/Update, Delete

How to view the COMP data

Alternate index

Arrays or table handling or Occurs

Sub programs or sub routines

Static call

Dynamic call

Call by reference

Call by Call content/Value

What You Will Learn?

  • Introduction to COBOL module, COBOL program structure, CODING sheet.
  • How to write COBOL.
  • COBOL Language rules.
  • Level numbers (01 – 49, 66, 77, 88).
  • Data types in COBOL.
  • Value clause, MOVE, OF clause, Reference modification, Redefines and Renames.
  • Editing picture clauses.
  • Compilation process and compiler options and Checking the errors.
  • Relational operators.
  • Logical operators.
  • Conditional statements (IF and Evaluate).
  • Sign and class conditions: IS NUMERIC, IS ZERO,IS POSITIVE,IS ALPHABETIC.
  • String,Unstring and Inspect VERBS.
  • Inline and Outline Performs.
  • Simple Perform, Perform N times, Perform Until Condition, Perform varying and Perform THRU.
  • Differences between NEXT SENTENCE and CONTINUE.
  • Differences between STOP RUN, EXIT PROGRAM and GOBACK.
  • PS file handling: READ,WRITE, UPDATE.
  • KSDS-Sequential,Random and Dynamic READ, Write,Update/rewrite,Delete.
  • Handling ESDS.
  • Occurs/Table Handling in COBOL/Arrays and Dyanmic arrays.
  • Subprograms:Static call,Dynamic call,Call by reference and Call by Value/Content.