sequential access storage

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• Sequential access memory — In computing, sequential access memory (SAM) is a class of data storage devices that read their data in sequence. This is in contrast to random access memory (RAM) where data can be accessed in any order. Sequential access devices are usually a… …   Wikipedia

• sequential access —    An access method used by some storage devices, such as tapes, that requires them to start at the beginning to find a specific storage location. If the information is toward the end of the tape, access can take a long time.    See also random… …   Dictionary of networking

• sequential-access — /si kwen sheuhl ak ses/, adj. Computers. 1. of or pertaining to a storage medium, as magnetic tape, in which records must be accessed by reading or writing from the beginning of the file. 2. of or pertaining to file processing in which records… …   Universalium

• sequential-access — /si kwen sheuhl ak ses/, adj. Computers. 1. of or pertaining to a storage medium, as magnetic tape, in which records must be accessed by reading or writing from the beginning of the file. 2. of or pertaining to file processing in which records… …   Useful english dictionary

• Direct access storage device — In mainframe computers and some minicomputers, a direct access storage device, or DASD (  /ˈdæ …   Wikipedia

• Indexed Sequential Access Method — Index Sequential Access Method (ISAM) ist eine von IBM Ende der 1960er Jahre entwickelte Zugriffsmethode für Datensätze einer Datei, die sowohl (sortiert) sequentiellen als auch wahlfreien (random) index basierten Zugriff zulässt. Eine Datei kann …   Deutsch Wikipedia

• Queued sequential access method — In IBM mainframe operating systems, a queued sequential access method (QSAM) is one of the access methods for files, or more properly data sets. QSAM files are unkeyed, with the records placed one after another, according to entry order. A… …   Wikipedia

• Index Sequential Access Method — (ISAM) ist eine von IBM Ende der 1960er Jahre entwickelte Zugriffsmethode für Datensätze einer Datei, die sowohl (sortiert) sequentiellen als auch wahlfreien (random) index basierten Zugriff zulässt. Eine Datei kann mehrere verschiedene Indizes… …   Deutsch Wikipedia

• Indexed Sequential Access Method — Organisation séquentielle indexée L organisation séquentielle indexée, ou Indexed Sequential Access Method (ISAM) en anglais, est un mode d organisation des fichiers qui permet un accès séquentiel et un accès aléatoire aux enregistrements du… …   Wikipédia en Français

• Access method — An access method is a function of a mainframe operating system that enables access to data on disk, tape or other external devices. They were introduced in 1963 in IBM OS/360 operating system. [http://researchweb.watson.ibm.com/journal/rd/255/ausl… …   Wikipedia

• Computer data storage — 1 GB of SDRAM mounted in a personal computer. An example of primary storage …   Wikipedia