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, Version 1) was implemented in 1 ...
,
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 computin ...
and
RSX-11M operating system
An operating system (OS) is system software that manages computer hardware, software resources, and provides common daemon (computing), services for computer programs.
Time-sharing operating systems scheduler (computing), schedule tasks for ef ...
s that
programs
Program, programme, programmer, or programming may refer to:
Business and management
* Program management, the process of managing several related projects
* Time management
* Program, a part of planning
Arts and entertainment Audio
* Progra ...
may call to process
files and
records
A record, recording or records may refer to:
An item or collection of data Computing
* Record (computer science), a data structure
** Record, or row (database), a set of fields in a database related to one entity
** Boot sector or boot record, r ...
within files.
[
] Its file formats and procedures are similar to of those in some IBM
access methods 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 integrated into RT-11 and RSTS/E, but was available as a "layered product".)
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 ApplicationsOpenVMS Record Management Services Reference Manual
{{Digital Equipment Corporation
OpenVMS software
Digital Equipment Corporation