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MUMPS
UMPS MUMPS ("Massachusetts General Hospital Utility Multi-Programming System"), or M, is an imperative, high-level programming language with an integrated transaction processing key–value database. It was originally developed at Massachusetts General Hospital for managing patient medical records and hospital laboratory information systems.
[3] It grew out of frustration, during a National Institutes of Health(NIH) supported hospital information systems project at the MGH, with the development in assembly language on a time-shared PDP-1 by primary contractor Bolt, Beranek & Newman(BBN). InterSystems remains the dominant "M vendor" owning MSM, DSM, ISM, DTM and selling its IRIS Data Platform (and, until 2018, its predecessor Caché) to M developers who write applications for a variety of operating systems. Early MUMPS programmers would often store a structure of related information as a delimited string, parsing it after it was read in; this saved disk access time and offered considerable speed advantages on some hardware.
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