Multics Relational Data Store
Relational database for the Multics operating system From Wikipedia, the free encyclopedia
The Multics Relational Data Store, or MRDS for short, was the first commercial relational database management system. It was written in PL/1 by Honeywell for the Multics operating system and first sold in June 1976.[1] Unlike the SQL systems that emerged in the late 1970s and early 80s, MRDS used a command language only for basic data manipulation, equivalent to the SELECT
or UPDATE
statements in SQL. Other operations, like creating a new database, or general file management, required the use of a separate command program.
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