Advanced Topics in COBOL (Enterprise COBOL, z/OS) Virtual Classroom Live August 11, 2025

Price: $1,995

This course runs for a duration of 3 Days.

The class will run daily from 10 AM ET to 5 PM ET.

Class Location: Virtual LIVE Instructor Led - Virtual Live Classroom.

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Description

Objectives
Code COBOL mainline programs that CALL subroutines, passing arguments as necessary and COBOL subroutine programs that are CALLed, receiving any passed parameters

Explain the tradeoffs in deciding whether to use static or dynamic linkages when using external subroutines
Define and process tables, including: Initializing tables using VALUE or REDEFINES clauses, the INITIALIZE statement, loops, and extracting data from records in a file Working with tables of more than one dimension
Process tables using subscripting, indexing, or mixing subscripting and indexing; also using relative subscripting and relative indexing
Use the SET, SEARCH, and SEARCH ALL verbs as they apply to indexed tables
Use the ALL subscript capability of intrinsic functions
Work with variable length records in sequential files
Use the string handling features of COBOL, including Reference modification (sub-stringing), Hexadecimal notation, LENGTH OF special register and the LENGTH intrinsic function, INSPECT, STRING, and UNSTRING verbs, Null-terminated strings
Use some advanced features of the newest IBM COBOL compilers, including Local-storage section,
Recursive programs, Pointers, procedure-pointers, function-pointers, Address Of special register, Dynamic file allocation
(Optionally) use the COBOL SORT and MERGE verbs.

Topics

Introduction to Subroutines
Additional Subroutine Topics
Nested Programs
Additional Subroutine Capabilities - Optional
Table Handling, II
Table Handling, III
Initializing Tables
Indexing
Intrinsic Functions and Tables
Introduction to String Handling In COBOL
More String Handling in COBOL
COBOL SORT Facility (Optional)
Other Advanced Topics (Optional)

Course Overview

I. Introduction to Subroutines
A. Invoking Subroutines - CALL
B. Leaving a CALLed program
C. Passing Arguments and Receiving Parameters
- Computer Exercise: A Mainline and Subroutines
II. Additional Subroutine Topics
A. Static vs. Dynamic CALLs
B. CALL ... ON OVERFLOW / EXCEPTION
C. CANCEL
D. Passing Arguments BY VALUE
E. How arguments are passed
F. How parameters are received
G. Returning values: the RETURNING phrase
H. Shared Data: the EXTERNAL Attribute
- Computer Exercise: External Subroutines and Shared Data
III. Nested Programs
A. Nested Programs - The Concept
B. Nested Program Structures
C. The Uses of Nested Programs
D. The INITIAL Attribute
- Computer Exercise: Nested Programs
IV. Additional Subroutine Capabilities - Optional
A. ENTRY Points
B. Local-storage
C. Recursive programs
D. Table Handling
E. Tables and subscripts
F. Loading a Table From a File
G. Looking Up an Element in a Table
- Computer Exercise: Build and Print a Table
V. Table Handling, II
A. Sorting a Table
- Computer Exercise: Table Sorting
VI. Table Handling, III
A. Variable Length Tables
B. Two-Dimensional Tables
VII. Initializing Tables
A. VALUE clauses, REDEFINES and INITIALIZE
B. Loops and I/O
C. PERFORM ... VARYING
- Computer Exercise: Two Dimensional Tables
VIII.Indexing
A. Index-names and Index Data Items
B. SET, SEARCH, SEARCH ALL
- Computer Exercise: Using Indexes and SEARCH
IX. Intrinsic Functions and Tables
A. Concepts and Syntax
B. The ALL subscript
C. Variable Length Records
D. Defining E. Processing
-  Computer Exercise: Reading a File With Variable Length Records
X. Introduction to String Handling In COBOL
A. Hex Notation
B. Reference Modification
C. LENGTH OF special register (IBM extension)
D. LENGTH intrinsic function E. INSPECT
-  Computer Exercise: Analyzing Strings
XI. More String Handling in COBOL
A. STRING
B. UNSTRING
-  Computer Exercise: More String Handling 8
XII. COBOL SORT Facility (Optional)
A. Sort Files
B. The SORT Verb
C. Sort Control Statements
D. MERGE
-  Computer Exercise: COBOL SORT
XIII.Other Advanced Topics (Optional)
A. Null-terminated strings
B. Pointers
C. Address Of Special Register
D. Procedure-pointers
E. Function-pointers
F. Dynamic file allocation

Prerequisites

Structured COBOL Workshop [for Enterprise COBOL] is a prerequisite for this course.

Other Available Dates for this Course

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December 09, 2024

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March 31, 2025

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