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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. Unlike the SQL systems that emerged in the late 1970s and early 80s, MRDS used a command language only for basic data manipulation…
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multics data mrds first database management system command honeywell sql relational store short commercial written pl operating sold june 1976
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