data access method
Смотреть что такое "data access method" в других словарях:
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
Data access layer — A data access layer (DAL) is a layer of a computer program which provides simplified access to data stored in persistent storage of some kind, such as an entity relational database. For example, the DAL might return a reference to an object (in… … Wikipedia
Channel access method — In telecommunications and computer networks, a channel access method or multiple access method allows several terminals connected to the same multi point transmission medium to transmit over it and to share its capacity. Examples of shared… … Wikipedia
access method — Computers. a method of accessing data read from or written to an external storage medium, determined by software and the organization of data on the medium. * * * … Universalium
access method — Computers. a method of accessing data read from or written to an external storage medium, determined by software and the organization of data on the medium … Useful english dictionary
access method — 1) Techniques and rules for moving data between main storage and input/output devices. 2) A means of granting network utilization rights to one or more PC users (e.g., via token passing or CSMA/CD) … IT glossary of terms, acronyms and abbreviations
Microsoft Data Access Components — MDAC redirects here. For other uses, see MDAC (disambiguation). MDAC (Microsoft Data Access Components) Microsoft Corporation s MDAC provides a uniform framework for accessing a variety of data sources on their Windows platform. Developer(s)… … Wikipedia
Virtual storage access method — (VSAM) is an IBM disk file storage access method, first used in the OS/VS2 operating system, later used throughout the Multiple Virtual Storage (MVS) architecture and now in z/OS. Originally a record oriented filesystem, VSAM comprises four data… … Wikipedia
Basic direct access method — In IBM mainframe operating systems, basic direct access method (BDAM) is an access method to read and write data sets directly. In BDAM, the programmer has complete control of the organization of the file. Placement and retrieval is done by… … Wikipedia
Basic sequential access method — In IBM mainframe operating systems, basic sequential access method (BSAM) is an access method to read and write data sets sequentially. BSAM is available on OS/360, OS/VS2, MVS, z/OS, and related high end operating systems.BSAM is used both for… … 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
