Revision as of 10:59, 31 August 2010

Last modified date is: 2010-08-31

Graphical representation

Diagram

Name	Inverse n-ary relationship
Also known as
Author(s)	MariaPoveda, MariCarmenSuarezFigueroa
SubmittedBy	MariaPoveda, MariCarmenSuarezFigueroa

Motivation	The n-ary relationships should be used when: (a) a binary relationship really needs a further argument; (b) two binary relationships always go together and should be represented as one n-ary relation; (c) a relationship that is really amongst several things. The motivation of this pattern is to express the inverse relationship of a n-ary one.
Aim	The aim of this pattern is to allow asking for n-ary relationships and its inverse without a complex query involving the class created to support the n-ary relation between the origin and destiantion classes of the n-ary relationship.
Solution description
Elements	Class, Relationship, Attribute and inverseOf
Implementation
Reusable component
Component type

Problem example	We might want to represent that the service providers provide a service at a place in a given period of time with a price. Also is needed represent that a service is offered by a provider.
Pattern solution example	http://ontologydesignpatterns.org/wiki/Image:LP-IN-01v1.jpg
Consequences	The main advantage of this pattern is that allows to ask for which services are provided by a service provider and vice versa without a complex query involving the class created to support the n-ary relation between service providers and services.

Origin	Logical Pattern for Modelling N-ary Relation: Introducing a New Class for the Relation
Known use
Reference
Related ODP	Logical Pattern for Modelling N-ary Relation: Introducing a New Class for the Relation
Used in combination with	Logical Pattern for Modelling N-ary Relation: Introducing a New Class for the Relation
Test

Scenarios about Summarization of an inverse n-ary relation

No scenario is added to this Content OP.

Reviews about Summarization of an inverse n-ary relation

There is no review about this proposal.

Some subquery has no valid condition.

This revision (revision ID 9921) takes in account the reviews: none

Modeling issues about Summarization of an inverse n-ary relation

There is no Modeling issue related to this proposal.

Some subquery has no valid condition.

	Submission to event WOP:2010

@@ Line 6: / Line 6: @@
 {{Logical OP General Template
 |Name=Inverse n-ary relationship
 |SubmittedBy=MariaPoveda, MariCarmenSuarezFigueroa,
 |Author=MariaPoveda, MariCarmenSuarezFigueroa,
 }}
 {{Logical OP Description Template
-|Motivation=Express the inverse relationship of a n-ary one. The n-ary relationships could be due to: (a) a binary relationship really needs a further argument; (b) two binary relationships always go together and should be represented as one n-ary relation; (c) a relationship that is really amongst several things.
+|Motivation=The n-ary relationships should be used when: (a) a binary relationship really needs a further argument; (b) two binary relationships always go together and should be represented as one n-ary relation; (c) a relationship that is really amongst several things.
-|Aim=This pattern aims to allow asking for n-ary relationships and its inverse without a complex query involving the class created to support the n-ary relation between the origin and destiantion classes of the n-ary relationship.
+The motivation of this pattern is to express the inverse relationship of a n-ary one.
+|Aim=The aim of this pattern is to allow asking for n-ary relationships and its inverse without a complex query involving the class created to support the n-ary relation between the origin and destiantion classes of the n-ary relationship.
 |Elements=Class, Relationship, Attribute and inverseOf
 }}