MUMPS
Massachusetts General Hospital Utility Multi-Programming System
Mass General, 1966
A database-oriented operating system and the language that goes with it. It was used originally for medical records. The only data type is the string. Persistent associative arrays. See M[1].
"MUMPS Language Standard", ANS X11.1-1977, ASN X11-1990.
DSM
Digital Standard Mumps
For DEC
Datatree MUMPS
For MS-DOS.
Unix MUMPS
From PFCS mumps@pfcs.com