Record Management Services (RMS) are procedures in the VMS,

RSTS/E RSTS () is a multi-user time-sharing operating system developed by Digital Equipment Corporation (DEC, now part of Hewlett-Packard) for the PDP-11 series of 16-bit minicomputers. The first version of RSTS (RSTS-11, #Versions, Version 1) was implem ...

RT-11 RT-11 (Real-time 11) is a discontinued small, low-end, single-user real-time operating system for the full line of Digital Equipment Corporation PDP-11 16-bit computers. RT-11 was first implemented in 1970. It was widely used for real-time compu ...

and RSX-11M

operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...

s that programs may call to process files and records within files. Its file formats and procedures are similar to of those in some IBM

access methods Access may refer to: Companies and organizations * ACCESS (Australia), an Australian youth network * Access (credit card), a former credit card in the United Kingdom * Access Co., a Japanese software company * Access International Advisors, a h ...

for several of its

mainframe computer A mainframe computer, informally called a mainframe or big iron, is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterprise ...

operating systems and by other vendors for file and record management. VMS RMS is an integral part of the system software; its procedures run in executive mode. (RMS was not initially integrated into RT-11 and RSTS/E, but was available as an added charge "layered product". It was later added to RSTS/E and was a part of its standard documentation set.) RMS supports four record access methods: * Sequential Access * Relative Record Number Access * Record File Address Access * Indexed Access RMS supports four record formats: * Fixed length * Variable length * Variable record length with fixed-length control blocks * Stream files (records separated by termination characters) ** STREAM: Records terminated by CRLF ** STREAM_CR: Records terminated by CR ** STREAM_LF: Records terminated by LF Digital provided the File Definition Language (FDL) which could be used to define the structure of an RMS file.

Notes

References

External links

Guide to OpenVMS File Applications

OpenVMS Record Management Services Reference Manual

{{Digital Equipment Corporation OpenVMS software Digital Equipment Corporation