Karl Jones: Created page with "In software engineering, the '''three-schema approach''', or '''three-schema concept''', is an approach to building information systems and systems information manage..."

2016-12-06T18:21:32Z

Created page with "In software engineering, the '''three-schema approach''', or '''three-schema concept''', is an approach to building information systems and systems information manage..."

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In [[software engineering]], the '''three-schema approach''', or '''three-schema concept''', is an approach to building [[information systems]] and systems information management that originated in the 1970s.

It proposes three different views in systems development, with [[Conceptual schema|conceptual modeling]] being considered the key to achieving data integration.

== Description ==

The three-schema approach provides for three types of schemas with schema techniques based on [[formal language]] descriptions:

* External schema for user views
* Conceptual schema integrates external schemata
* Internal schema that defines physical storage structures

== See also ==

* [[Conceptual schema]]
* [[Data model]]
* [[Data modeling]]
* [[Entity-relationship model]]
* [[Information systems]]
* [[Object-role modeling]]
* [[View model]]

== External links ==

* [https://en.wikipedia.org/wiki/Three-schema_approach Three schema approach] @ Wikipedia

[[Category:Software engineering]]

Three schema approach - Revision history

Karl Jones: Created page with "In software engineering, the '''three-schema approach''', or '''three-schema concept''', is an approach to building information systems and systems information manage..."