A database language for DEC-10' s, used internallY bYTYmshare, Inc.. MAGNUM was designed in the late 1970' s bY Dale Jordan, Rich Strauss and Dave McQuoid originallY, and was written in BLISS-10. It was the world' s first commercial relational database. It was in the process of being written in 1976. (1995-01-25)