OpenVMS - Central OpenVMS-related Topics

Central OpenVMS-related Topics

OpenVMS-related terms and acronyms include:

  • ACMS - Digital's transaction processing (TP) system, often used with the DECdtm distributed transaction manager system service components of OpenVMS, and with the DECforms and Rdb products in applications with transactional requirements
  • Asynchronous system trap (AST)
  • Command Language Interface (CLI) – library routines for parsing VMS command line parameters
  • DECforms - Digital's successor to the Forms Management System
  • DECnet - Digital's proprietary networking architecture which also includes MOP.
  • DELTA and XDELTA - OpenVMS debuggers
  • DIGITAL Command Language (DCL) - Digital Command Language - command line interpreter.
  • DECwindows - Digital's implementation of the X Window System.
  • Event flag - a simple synchronization mechanism
  • Files-11 - low level filesystem
  • File Description Language (FDL) - defines file record/field structure
  • Forms Management System (FMS) - Digital's first generation language-independent Form driver
  • Local Area Transport (LAT) - is a LAN-based non-routable communications protocol to support DEC and other Terminal Servers
  • QIO Queued Input Output; the low-level I/O interface
  • Oracle Rdb - An SQL compliant relational database created by DEC but now owned by Oracle
  • Record Management Services (RMS) - high-level, language/device-independent Input/output
  • Runtime libraries (RTL) - shared routines and functions, callable from any language
  • OpenVMS Galaxy - co-habitating OpenVMS installations; a form of system partitioning
  • OpenVMS Clusters - for redundancy, incremental hardware upgrades, or disaster tolerance
  • System 1032 (S1032) - A high-performance database management system and application development environment designed to support the OpenVMS user community. Used at some companies in the 1980s and 90s, but, in little use today.
  • XQP - the eXtended QIO Processor (XQP), which implements the Files-11 filesystem.

For information on layered products, see the Software Product Description (SPD) for the product. For OpenVMS components, see the OpenVMS documentation set.

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