Model 204

Model 204 (M204) is a database management system for IBM and compatible mainframe computers developed and commercialized by Computer Corporation of America.

It was announced in 1965,: 66  and first deployed in 1972.

It incorporates a programming language and an environment for application development.

Implemented in assembly language for IBM System/360 and its successors, M204 can deal with very large databases and transaction loads of 1000 TPS.: 4