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Content Addressable File Store
The Content Addressable File Store (CAFS) was a hardware device developed by International Computers Limited (ICL) that provided a disk storage with built-in search capability. The motivation for the device was the discrepancy between the high speed at which a disk could deliver data, and the much lower speed at which a general-purpose processor could filter the data looking for records that matched a search condition. Development of CAFS started in ICL's Research and Advanced Development Centre under Gordon Scarrott in the late 1960s following research by George Coulouris and John Evans who had completed a field study at Imperial College and Queen Mary College on database systems and applications . Their study had revealed the potential for substantial performance improvements in large-scale database applications by the inclusion of search logic in the disk controller. In its initial form, the search logic was built into the disk head. A standalone CAFS device was installed with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Computers Limited
International Computers Limited (ICL) was a British computer hardware, computer software and computer services company that operated from 1968 until 2002. It was formed through a merger of International Computers and Tabulators (ICT), English Electric Computers (EEC) and Elliott Automation in 1968. The company's most successful product line was the ICL 2900 Series range of mainframe computers. In later years, ICL diversified its product line but the bulk of its profits always came from its mainframe customers. New ventures included marketing a range of powerful IBM clones made by Fujitsu, various minicomputer and personal computer ranges and (more successfully) a range of retail point-of-sale equipment and back-office software. Although it had significant sales overseas, ICL's mainframe business was dominated by large contracts from the UK public sector, including Post Office Ltd, the Inland Revenue, the Department for Work and Pensions and the Ministry of Defence (United Kingdo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Informix
Informix is a product family within IBM's Information Management division that is centered on several relational database management system (RDBMS) and multi-model database offerings. The Informix products were originally developed by Informix Corporation, whose Informix Software subsidiary was acquired by IBM in 2001. In April 2017, IBM delegated active development and support to HCL Technologies for 15 years, with a number of IBM employees working on Informix also moving to HCL. As part of this arrangement IBM will continue to market and sell it as IBM Informix to their customers, with HCLTech able to market and sell it as HCL Informix. The current version of Informix is 14.10 and forms the basis of several product editions with variation in capacity and functionality. The Informix database has been used in many high transaction rate OLTP applications in the retail, finance, energy and utilities, manufacturing and transportation sectors. More recently the server has be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Storage Media
In communications and computing, a machine-readable medium (or computer-readable medium) is a medium capable of storing data in a format easily readable by a digital computer or a sensor. It contrasts with ''human-readable'' medium and data. The result is called machine-readable data or computer-readable data, and the data itself can be described as having machine-readability. Data Machine-readable data must be structured data. Attempts to create machine-readable data occurred as early as the 1960s. At the same time that seminal developments in machine-reading and natural-language processing were releasing (like Weizenbaum's ELIZA), people were anticipating the success of machine-readable functionality and attempting to create machine-readable documents. One such example was musicologist Nancy B. Reich's creation of a machine-readable catalog of composer William Jay Sydeman's works in 1966. In the United States, the OPEN Government Data Act of 14 January 2019 defines machi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Storage Devices
Computer data storage or digital data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. The central processing unit (CPU) of a computer is what manipulates data by performing computations. In practice, almost all computers use a storage hierarchy, which puts fast but expensive and small storage options close to the CPU and slower but less expensive and larger options further away. Generally, the fast technologies are referred to as "memory", while slower persistent technologies are referred to as "storage". Even the first computer designs, Charles Babbage's Analytical Engine and Percy Ludgate's Analytical Machine, clearly distinguished between processing and memory (Babbage stored numbers as rotations of gears, while Ludgate stored numbers as displacements of rods in shuttles). This distinction was extended in the Von Neumann architecture, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Content-addressable Storage
The content-addressable network (CAN) is a distributed, decentralized Peer-to-peer, P2P infrastructure that provides hash table functionality on an Internet-like scale. CAN was one of the original four distributed hash table proposals, introduced concurrently with Chord project, Chord, Pastry (DHT), Pastry, and Tapestry (DHT), Tapestry. Overview Like other distributed hash tables, CAN is designed to be scalable, fault tolerant, and self-organizing. The architectural design is a virtual multi-dimensional Cartesian coordinate system, Cartesian coordinate space, a type of overlay network, on a multi-torus. This ''n''-dimensional coordinate space is a Virtuality, virtual logical address, completely independent of the physical location and physical connectivity of the nodes. Point (geometry), Points within the space are identified with coordinates. The entire coordinate space is dynamically partitioned among all the nodes in the system such that every node possesses at least one distinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RS/6000
The RISC System/6000 is a family of RISC-based (Reduced Instruction Set Computer-based) Unix servers, workstations and supercomputers made by IBM in the 1990s. The RS/6000 family replaced the IBM RT PC computer platform in February 1990 and is the first computer line to see the use of IBM's POWER and PowerPC based microprocessors. In October 2000, the RS/6000 brand was retired for POWER-based servers and replaced by the eServer pSeries. Workstations continued under the RS/6000 brand until 2002, when new POWER/-based workstations were released under the IntelliStation POWER/ brand. The RS/6000 floating-point execution unit (FPU) enabled major improvements in the speed and accuracy of floating-point operations. The key feature of the FPU was introducing the MAF (multiply-add fused) operation, which has since become standard in most modern processors. History The first RS/6000 models used the IBM Standard Micro Channel (SMC) bus; later models used PCI. Some later models ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oracle Database
Oracle Database (commonly referred to as Oracle DBMS, Oracle Autonomous Database, or simply as Oracle) is a proprietary multi-model database management system produced and marketed by Oracle Corporation. It is a database commonly used for running online transaction processing (OLTP), data warehousing (DW) and mixed (OLTP & DW) database workloads. Oracle Database is available by several service providers on-premises, on-cloud, or as a hybrid cloud installation. It may be run on third party servers as well as on Oracle hardware ( Exadata on-premises, on Oracle Cloud or at Cloud at Customer). Oracle Database uses SQL for database updating and retrieval. History Larry Ellison and his two friends and former co-workers, Bob Miner and Ed Oates, started a consultancy called Software Development Laboratories (SDL) in 1977, later Oracle Corporation. SDL developed the original version of the Oracle software. The name ''Oracle'' comes from the code-name of a CIA-funded proj ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ICL DRS
The ICL DRS was a range of departmental computers from International Computers Limited (ICL). Standing originally for ''Distributed Resource System'', the full name was later dropped in favour of the abbreviation. During the mid-1980s separate Office Systems business units had produced a disparate range of products including IBM-compatible PCs such as the PWS (a PC/AT clone), small servers branded DRS, and various larger Unix servers sold under the Clan range. A rebranding in late 1988 pulled these together under the DRS brand, with a consistent mid-grey and peppermint-green livery. The ICL division responsible for these systems eventually became part of the Fujitsu-Siemens joint venture. DRS 20/100/200 The original DRS was the DRS 20 produced in Utica, New York and launched in September 1981. This ran the proprietary DRX (Distributed Resource Executive) operating system. The basic 'intelligent terminal' (model 10/110/210) used 8-bit 8085 processors (workstati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Coulouris (computer Scientist)
George F. Coulouris (15 November 1937 – 18 November 2024) was a British computer scientist and the son of actor George Coulouris. He was an emeritus professor of Queen Mary, University of London and formerly visiting professor in residence at University of Cambridge Computer Laboratory. He was co-author of a textbook on distributed systems. He was instrumental in the development of ICL's Content Addressable File Store (CAFS) and he developed ''em'', the Unix editor, which inspired Bill Joy to write vi. Education In 1960 George Coulouris graduated with an honours degree in Physics from University College London. Career Coulouris worked at IBM and other companies before joining the London Institute of Computer Science as a Research Assistant and then Imperial College London as a lecturer in 1965. In 1971 he joined Queen Mary College as a lecturer. He became a reader in 1973 and a professor in 1978. He retired from Queen Mary in 1998, but continued as a visiting professor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Queen's Award For Enterprise
Queens is a borough of New York City. Queens or Queen's may also refer to: Arts and entertainment * Queens (group), a Polish musical group * "Queens" (song), a 2018 song by Saara Aalto * ''Queens'' (novel), by Stephen Pickles, 1984 * "Queens", a song by Caravan Palace from '' Panic'', 2012 * ''The Queens'', the third novel in a planned trilogy in the Ender's Game series * ''Queens'' (film), 2005 Spanish film * ''The Queens'' (2015 film), a Chinese romance film based on the novel of the same name * The Queens (2019 film), Canadian documentary film * ''Queens'' (American TV series), an American musical drama television series 2021–2022 * ''Queen's'' (TV series), 2007 * ''The Queens'' (TV series), a 2008 Chinese historical drama * '' Queens: The Virgin and the Martyr'', a Spanish and British historical drama television series * Queens (''Bluey''), an episode of the 2018 television series ''Bluey'' * Queen's Theatre (other) Places * Queens, West Virginia, U.S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ingres (database)
Ingres Database ( ) is a proprietary SQL relational database management system intended to support large commercial and government applications. Actian Corporation controls the development of Ingres and makes certified binaries available for download, as well as providing worldwide support. There was an open source release of Ingres but it is no longer available for download from Actian. However, there is a version of the source code still available on GitHub. In its early years, Ingres was an important milestone in the history of database development. Ingres began as a research project at UC Berkeley, starting in the early 1970s and ending in 1985. During this time Ingres remained largely similar to IBM's seminal System R in concept; it differed in more permissive licensing of source code, in being based largely on DEC machines, both under UNIX and VAX/VMS, and in providing QUEL as a query language instead of SQL. QUEL was considered at the time to run truer to Edgar F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
