Strict Standards: Non-static method DB::connect() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 32

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Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 34

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Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 97

Strict Standards: Non-static method DB::connect() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 32

Strict Standards: Non-static method DB::parseDSN() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 520

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Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 34
Catalogue of Artificial Intelligence Techniques

Catalogue of Artificial Intelligence Techniques

   

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Strict Standards: Non-static method DB::isManip() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 2200

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Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 113

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Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 1666

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 1387

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 1683

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 113

Strict Standards: Non-static method DB::isManip() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 2200

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Functional Data Model

Keywords: CONNIVER, DAPLEX, PLANNER, data model, derived functions, entity-relationship, if-added, if-needed

Categories: Data Models


Author(s): Austin Tate

An entity-relationship data model with relationships expressed as functions from arguments to a single entity value or to a set of entities. Derived functions allow the definition of arbitrary new relationships in terms of existing ones. Different views of data can be presented by defining appropriate derived functions. Updating of derived relationships is supported through procedures explicitly provided by the user. Data manipulation languages, such as DAPLEX, have been added to the Functional Data Model to provide the notion of looping through entity sets to perform operations. The Functional data model incorporates many of the ideas in earlier Semantic Net systems, the if-needed and if-added theorems of the PLANNER and CONNIVER languages, and a range of data models.


References:


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Comments:


Strict Standards: Non-static method DB::isManip() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 2200

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 1217

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 1666

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB.php on line 1387

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /usr/share/pear/DB/common.php on line 1683

Strict Standards: Non-static method DB::isError() should not be called statically, assuming $this from incompatible context in /group/project/aicat/web/lib/database.php on line 113
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