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- Queued_Sequential_Access_Method abstract "In IBM mainframe operating systems, Queued sequential access method (QSAM) is an access method to read and write datasets sequentially. QSAM is available on OS/360, OS/VS2, MVS, z/OS, and related high-end operating systems.QSAM is used both for devices that are naturally sequential, such as punched card readers and punches and line printers, and for data on devices that could also be addressed directly, such as magnetic disks. QSAM offers device independence: to the extent possible, the same API calls are used for different devices.QSAM is—as its name says—queued, in this specific context meaning buffered with deblocking of reads and blocking of writes. It allows programs to read and write logical records within physical blocks of data, as opposed to the less advanced Basic sequential access method (BSAM) which allows programs to access physical blocks of data, but provides no support for accessing logical records within blocks.Indeed, QSAM manages truncated final blocks and truncated embedded blocks completely transparently to the user.The QSAM application program interface can be compared with the interface offered by open, read, write and close calls (using file handles) in other operating systems such as Unix and Windows.".
- Queued_Sequential_Access_Method wikiPageID "33430931".
- Queued_Sequential_Access_Method wikiPageLength "2091".
- Queued_Sequential_Access_Method wikiPageOutDegree "20".
- Queued_Sequential_Access_Method wikiPageRevisionID "696915520".
- Queued_Sequential_Access_Method wikiPageWikiLink Access_method.
- Queued_Sequential_Access_Method wikiPageWikiLink Application_programming_interface.
- Queued_Sequential_Access_Method wikiPageWikiLink Basic_sequential_access_method.
- Queued_Sequential_Access_Method wikiPageWikiLink Category:IBM_mainframe_operating_systems.
- Queued_Sequential_Access_Method wikiPageWikiLink Data_set_(IBM_mainframe).
- Queued_Sequential_Access_Method wikiPageWikiLink IBM_Information_Management_System.
- Queued_Sequential_Access_Method wikiPageWikiLink IBM_mainframe.
- Queued_Sequential_Access_Method wikiPageWikiLink ISAM.
- Queued_Sequential_Access_Method wikiPageWikiLink MVS.
- Queued_Sequential_Access_Method wikiPageWikiLink Microsoft_Windows.
- Queued_Sequential_Access_Method wikiPageWikiLink 360_and_successors.
- Queued_Sequential_Access_Method wikiPageWikiLink VS2.
- Queued_Sequential_Access_Method wikiPageWikiLink Operating_system.
- Queued_Sequential_Access_Method wikiPageWikiLink Punched_card.
- Queued_Sequential_Access_Method wikiPageWikiLink Sequential_access_memory.
- Queued_Sequential_Access_Method wikiPageWikiLink Unix.
- Queued_Sequential_Access_Method wikiPageWikiLink OS.
- Queued_Sequential_Access_Method wikiPageWikiLinkText "QSAM".
- Queued_Sequential_Access_Method wikiPageWikiLinkText "Queued Sequential Access Method".
- Queued_Sequential_Access_Method wikiPageUsesTemplate O_access_methods.
- Queued_Sequential_Access_Method subject Category:IBM_mainframe_operating_systems.
- Queued_Sequential_Access_Method hypernym Method.
- Queued_Sequential_Access_Method type Software.
- Queued_Sequential_Access_Method comment "In IBM mainframe operating systems, Queued sequential access method (QSAM) is an access method to read and write datasets sequentially. QSAM is available on OS/360, OS/VS2, MVS, z/OS, and related high-end operating systems.QSAM is used both for devices that are naturally sequential, such as punched card readers and punches and line printers, and for data on devices that could also be addressed directly, such as magnetic disks.".
- Queued_Sequential_Access_Method label "Queued Sequential Access Method".
- Queued_Sequential_Access_Method sameAs Q7271586.
- Queued_Sequential_Access_Method sameAs m.03b_lq4.
- Queued_Sequential_Access_Method sameAs Q7271586.
- Queued_Sequential_Access_Method wasDerivedFrom Queued_Sequential_Access_Method?oldid=696915520.
- Queued_Sequential_Access_Method isPrimaryTopicOf Queued_Sequential_Access_Method.