Information about System R
System R is a database system built as a research project at IBM San Jose Research (now IBM Almaden Research Center) in the 1970s. System R was a seminal project: it was the first implementation of Structured Query Language (SQL), which has since become the standard relational data query language. It was also the first system to demonstrate that a relational database management system could provide good transaction processing performance. Design decisions in System R, as well as some fundamental algorithm choices (such as the dynamic programming algorithm used in query optimization), influenced many later relational systems.
System R's first customer was Pratt & Whitney in 1977. [1]
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.
System R's first customer was Pratt & Whitney in 1977. [1]
See also
External links
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.
database is a structured collection of records or data that is stored in a computer system so that a computer program or person using a query language can consult it to answer queries. The records retrieved in answer to queries are information that can be used to make decisions.
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International Business Machines Corporation
Public (NYSE: IBM )
Founded 1889, incorporated 1911
Headquarters Armonk, New York, USA
Key people Samuel J.
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Public (NYSE: IBM )
Founded 1889, incorporated 1911
Headquarters Armonk, New York, USA
Key people Samuel J.
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The IBM Almaden Research Center, located near San Jose, California, is one of IBM's largest research centers, specializing in both basic research in material science and applied research in computer storage, where many refinements and improvements were made in hard disc drive
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SQL
Paradigm: multi-paradigm
Appeared in: 1974
Designed by: Donald D. Chamberlin and Raymond F. Boyce
Developer: IBM
Latest release: SQL:2003/ 2003
Typing discipline: static, strong
Major implementations: Many
SQL
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Paradigm: multi-paradigm
Appeared in: 1974
Designed by: Donald D. Chamberlin and Raymond F. Boyce
Developer: IBM
Latest release: SQL:2003/ 2003
Typing discipline: static, strong
Major implementations: Many
SQL
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Query languages are computer languages used to make queries into databases and information systems.
Broadly, query languages can be classified according to whether they are database query languages or information retrieval query languages. Examples include:
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Broadly, query languages can be classified according to whether they are database query languages or information retrieval query languages. Examples include:
- .
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A relational database management system (RDBMS) is a database management system (DBMS) that is based on the relational model as introduced by E. F. Codd. Relational databases are the most common kind of database in use today (assuming one does not count a file system as a database).
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transaction processing is information processing that is divided into individual, indivisible operations, called transactions. Each transaction must succeed or fail as a complete unit; it cannot remain in an intermediate state.
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dynamic programming is a method of solving problems exhibiting the properties of overlapping subproblems and optimal substructure (described below) that takes much less time than naive methods.
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Query optimization is a function of many relational database management systems in which multiple query plans for satisfying a query are examined and a good query plan is identified. This may or not be the absolute best strategy because there are many ways of doing plans.
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Pratt & Whitney
Subsidiary of UTC
Founded 1860
Headquarters East Hartford, Connecticut
Key people Steven Finger, President
Industry Aerospace
Products Aircraft engines
Gas turbines
Spacecraft propulsion
Website Pratt & Whitney
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Subsidiary of UTC
Founded 1860
Headquarters East Hartford, Connecticut
Key people Steven Finger, President
Industry Aerospace
Products Aircraft engines
Gas turbines
Spacecraft propulsion
Website Pratt & Whitney
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19th century - 20th century - 21st century
1940s 1950s 1960s - 1970s - 1980s 1990s 2000s
1974 1975 1976 - 1977 - 1978 1979 1980
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1940s 1950s 1960s - 1970s - 1980s 1990s 2000s
1974 1975 1976 - 1977 - 1978 1979 1980
- Also: 1977 (album) by Ash.
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SQL
Paradigm: multi-paradigm
Appeared in: 1974
Designed by: Donald D. Chamberlin and Raymond F. Boyce
Developer: IBM
Latest release: SQL:2003/ 2003
Typing discipline: static, strong
Major implementations: Many
SQL
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Paradigm: multi-paradigm
Appeared in: 1974
Designed by: Donald D. Chamberlin and Raymond F. Boyce
Developer: IBM
Latest release: SQL:2003/ 2003
Typing discipline: static, strong
Major implementations: Many
SQL
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The System/38 was a minicomputer, manufactured and sold by the IBM Corporation. Originally released in 1979, it was a precursor to the AS/400. The system offered a number of innovative features, and was the brainchild of IBM engineer Dr. Frank Soltis.
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GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free documentation, designed by the Free Software Foundation (FSF) for the GNU project.
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This article is copied from an article on Wikipedia.org - the free encyclopedia created and edited by online user community. The text was not checked or edited by anyone on our staff. Although the vast majority of the wikipedia encyclopedia articles provide accurate and timely information please do not assume the accuracy of any particular article. This article is distributed under the terms of GNU Free Documentation License.
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