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Relational database management system
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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, of IBM's San Jose Research
Laboratory. Many popular databases
currently in use are based on the relational
database model.
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Relational database management system - Historical usage of the term
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For clarification, they often refer to some
RDBMSs as Truly-Relational Database
Management Systems (TRDBMS), naming
others Pseudo-Relational Database
Management Systems (PRDBMS).
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Relational database management systems
A 'relational database management
system' ('RDBMS') is a database
management system (DBMS) that is
based on the relational model as
introduced by Edgar F. Codd|E. F. Codd,
of IBM's IBM Almaden Research
Center|San Jose Research Laboratory.
Many popular databases currently in use
are based on the relational database
model.
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Comparison of relational database management systems
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The following tables compare general
and technical information for a
number of relational database
management systems. Please see the
individual products' articles for
further information. Unless otherwise
specified in footnotes, comparisons
are based on the stable versions
without any add-ons, extensions or
external programs.
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Comparison of relational database management systems - Fundamental features
Comparison of relational database
management systems#feat 1|Note (1):
Currently only supports read
uncommited transaction isolation.
Version 1.9 adds serializable isolation
and version 2.0 will be fully ACID
compliant.
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Comparison of relational database management systems - Fundamental features
Comparison of relational database
management systems#feat 5|Note (5):
MySQL provides GUI interface through
MySQL Workbench.
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Comparison of object-relational database management systems
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This is a 'comparison of object-relational
database management systems'
(ORDBMSs). Each system has at least
some features of an object-relational
database; they vary widely in their
completeness and the approaches taken.
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Object-relational database management system
An 'object-relational database' ('ORD'), or
'object-relational database management
system' ('ORDBMS'), is a database
management system (DBMS) similar to a
relational database, but with an objectoriented database model: objects, classes
and inheritance are directly supported in
database schemas and in the query language.
In addition, just as with pure relational
systems, it supports extension of the data
model with custom data type|data-types and
method (computer science) |methods.
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