About: Relational model

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The relational model (RM) for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.

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rdf:type	programming language
rdfs:label	Relational model (en)
rdfs:comment	The relational model (RM) for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database. (en)
sameAs	Relational model Relational model
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Subject	1969 in computing Articles with example pseudocode Programming paradigms Relational model
gold:hypernym	Approach
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has abstract	The relational model (RM) for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by English computer scientist Edgar F. Codd, where all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database. The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries. Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases , and Codd fiercely argued against deviations that compromise the original principles. (en)
foaf:isPrimaryTopicOf	http://en.wikipedia.org/wiki/Relational_model
is Wikipage redirect of	Relational attribute Relational data model Relational database model Relational model of database management Relational Model
is Link from a Wikipage to another Wikipage of	Fortuneswell List of theorems Lists of database management systems Logical schema NitrosBase Null (SQL) Accent R Adaptive Server Enterprise Associative entity Attribute domain Azure Data Explorer Bob Miner Business rules approach Glossary of computer science Jakarta Persistence Jan Dietz David Maier David McGoveran Discovery Net Domain relational calculus History of mathematical notation Metakit Named set theory Object-PL/SQL Object-oriented design Object (computer science) Object database Object–relational database Object–relational mapping Odaba Charles Sanders Peirce Christopher J. Date Cypher (query language) DBase D (data language specification) Db4o Denormalization Hugh Darwen Keyspace (distributed data store) List of mathematical theories List of pioneers in computer science List of programmers Closure Codd's 12 rules Codd's theorem Collective classification Complex systems biology Component-oriented database Conceptual schema Configuration management database Couchbase Server ER/Studio ERIL Edgar F. Codd Hierarchical database model List of computer scientists List of computing and IT abbreviations Michael Stonebraker Data Analysis Expressions Data model Data modeling Data store

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