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Programming languages

COBOL

The planned outline of 15 modules. Lessons are written, run and reviewed before they are published.

Coming soon 15 modules

Coming soon. This track is being written. Below is its planned outline: a lesson appears here once its examples have been run and its technical review is signed off.

Planned outline

  1. Module 1

    Start here: COBOL today, its standards, compilers and source format

    Coming soon
  2. Module 2

    Data definitions: PICTURE, levels, MOVE rules and edited output

    Coming soon
  3. Module 3

    Numbers in storage, money arithmetic and dates

    Coming soon
  4. Module 4

    Conditions, loops and structured paragraphs

    Coming soon
  5. Module 5

    Text handling: STRING, UNSTRING, INSPECT and text functions

    Coming soon
  6. Module 6

    Tables: OCCURS, SEARCH and SORT

    Coming soon
  7. Module 7

    Sequential files and the classic batch patterns

    Coming soon
  8. Module 8

    Indexed and relative files (VSAM concepts)

    Coming soon
  9. Module 9

    EBCDIC, record layouts, Unicode and JSON

    Coming soon
  10. Module 10

    Copybooks, subprograms and interoperability

    Coming soon
  11. Module 11

    Errors, debugging and testing

    Coming soon
  12. Module 12

    Mainframe batch concepts: data sets, JCL and compilation (IBM z/OS)

    Coming soon
  13. Module 13

    Db2 and embedded SQL

    Coming soon
  14. Module 14

    CICS online programs (concepts with local business-logic tests)

    Coming soon
  15. Module 15

    Modern tooling, performance and safe change

    Coming soon

Official documentation

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