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David Nelson


Specific questions about CICS application development and debugging. Primarily COBOL with HL Assembler 24&31 bit support. Please don't ask things covered in the IBM CICS TS reference manuals at until after you have read the book.

Experience in the area

Over 30 years in CICS application development primarily for finacial organizations. Includes all file types and commands and CICS support features: TS Queue, TD Queue, Linkage, task sync, performance tuning, etc.


Graduate, New York School of Computer Technology (1966) and extensive training in all phases of application development (full SDLC) for online applications.

Past/Present Clients

Major east coast US financial orgs and software development and support for real-time applications. Software deployed in multiple countries of North and Central America, Asia, and Europe.

Something interesting about this subject that others may not know:

CICS was developed in England in the late 1960's to meet the need of a single IBM DOS (Disk operating System) customer. Now almost every IBM mainframe shop uses the product.

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