Rel (DBMS)
Encyclopedia
Rel is an open source
true relational
database management system
that implements a significant portion of Chris Date
and Hugh Darwen
's Tutorial D
query language
.
Primarily intended for teaching purposes, Rel is written in the Java programming language
.
Open source
The term open source describes practices in production and development that promote access to the end product's source materials. Some consider open source a philosophy, others consider it a pragmatic methodology...
true relational
Relational model
The relational model for database management is a database model based on first-order predicate logic, first formulated and proposed in 1969 by Edgar F...
database management system
Database management system
A database management system is a software package with computer programs that control the creation, maintenance, and use of a database. It allows organizations to conveniently develop databases for various applications by database administrators and other specialists. A database is an integrated...
that implements a significant portion of Chris Date
Christopher J. Date
Chris Date is an independent author, lecturer, researcher, and consultant, specializing in relational database theory.-Biography:Chris Date attended High Wycombe Royal Grammar School from 1951 to 1958 and received his BA in Mathematics from Cambridge University in 1962. He entered the computer...
and Hugh Darwen
Hugh Darwen
Hugh Darwen is a computer scientist who was an employee of IBM United Kingdom from 1967 to 2004, and has been involved in the history of the relational model.- Work :...
's Tutorial D
D (data language specification)
D is a set of requirements for what Christopher J. Date and Hugh Darwen believe a relational database query language ought to be like. It is proposed in their book The Third Manifesto.-Overview:...
query language
Query language
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...
.
Primarily intended for teaching purposes, Rel is written in the Java programming language
Java (programming language)
Java is a programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities...
.
See also
- D (data language specification)D (data language specification)D is a set of requirements for what Christopher J. Date and Hugh Darwen believe a relational database query language ought to be like. It is proposed in their book The Third Manifesto.-Overview:...
- The Third ManifestoThe Third ManifestoThe Third Manifesto is Christopher J. Date's and Hugh Darwen's proposal for future database management systems, a response to two earlier Manifestos with the same purpose. The theme of the manifestos is how to avoid the 'object-relational impedance mismatch' between object-oriented programming...
- D4 (programming language)D4 (programming language)D4 is a computer language used in Dataphor, a relational database management system.-Syntax:Alphora, the creators of D4, have given it a Pascal like syntax...
- DataphorDataphorDataphor is an open-source truly relational database management system and its accompanying user interface technologies, which together are designed to provide highly declarative software application development...