Editing List of file systems (section)

=== Record-oriented file systems ===
In [[Record-oriented filesystem|record-oriented file systems]] files are stored as a collection of [[record (computer science)|records]]. They are typically associated with [[Mainframe computer|mainframe]] and [[minicomputer]] operating systems. Programs read and write whole records, rather than bytes or arbitrary byte ranges, and can seek to a record boundary but not within records. The more sophisticated record-oriented file systems have more in common with simple [[database]]s than with other file systems.

* [[CMS file system]] – The native file system of the [[Conversational Monitor System]] component of [[VM/370]]
* [[Files-11]] – early versions were record-oriented; support for "streams" was added later
* [[Michigan Terminal System]] (MTS) – provides "line files" where record lengths and line numbers are associated as metadata with each record in the file, lines can be added, replaced, updated with the same or different length records, and deleted anywhere in the file without the need to read and rewrite the entire file.<ref>{{cite journal|title=A file system for a general-purpose time-sharing environment|first=G. C.|last=Pirkola|journal=Proceedings of the IEEE|date=June 1975|volume=63|issue=6|pages=918–924|issn=0018-9219|doi=10.1109/PROC.1975.9856|s2cid=12982770}}</ref>
* [[OS4000]] for GEC's OS4000 operating system, on the [[GEC 4000 series]] minicomputers
* A [[FAT12]] and [[FAT16]] (and [[FAT32]]) extension to support database-like file types ''random file'', ''direct file'', ''keyed file'' and ''sequential file'' in Digital Research [[FlexOS]], IBM [[4680 OS]] and Toshiba [[4690 OS]].<ref name="IBM_4690_Programming_Guide">IBM. ''4690 OS Programming Guide Version 5.2'', IBM document SC30-4137-01, 2007-12-06 ([https://public.dhe.ibm.com/software/retail/pubs/sw/opsys/4690/ver5r2/bsi1_PG_mst.pdf]).</ref> The record size is stored on a file-by-file basis in [[Design of the FAT file system#DIR OFS 10h|special entries]] in the directory table.<ref name="Caldera_1997_DOSSRC">Caldera (1997). ''Caldera OpenDOS Machine Readable Source Kit 7.01''. The FDOS.EQU file in the machine readable source kit has equates for the corresponding directory entries.</ref>
* Sequential access methods for IBM's [[z/OS]] and [[z/VSE]] mainframe operating systems: [[Basic Sequential Access Method]] (BSAM), [[Basic Partitioned Access Method]] (BPAM) and [[Queued Sequential Access Method]] (QSAM); see [[Access methods]] and [[Data set (IBM mainframe)]] for more examples
* [[Pick Operating System]] – A record-oriented filesystem and database that uses hash-coding to store data.
* [[VM (operating system)#Shared File System|Shared File System]] (SFS) for IBM's [[VM (operating system)|VM]]
* [[Virtual Storage Access Method]] (VSAM){{snd}} for IBM's [[z/OS]] and [[z/VSE]] mainframe operating systems