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{{Logical OP Reference Template | {{Logical OP Reference Template | ||
− | |Origin= | + | |Origin=Modelling distance between stages of St James Way during the Geobuddies ontology network development (http://geobuddies.dia.fi.upm.es). |
|KnownUse=Geobuddies ontology network | |KnownUse=Geobuddies ontology network | ||
|RelatedTo=N-ary Relation: New Class (LP-NR -01) | |RelatedTo=N-ary Relation: New Class (LP-NR -01) |
Diagram
Name | Symmetric n-ary relationship |
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Also known as | |
Author(s) | MariaPoveda, MariCarmenSuarezFigueroa |
SubmittedBy | MariaPoveda, MariCarmenSuarezFigueroa |
Motivation | The symmetric n-ary relationship pattern emerged from the need of modelling distances among two points..This problem is a clear case of an n-ary relationship where the relation between two places needs a further argument to represent the distance. Once we have applied the n-ary pattern for this use case (http://www.w3.org/TR/swbp-n-aryRelations/#useCase1), we can realize that the origin and the destination of the n-ary relation belong to the same class.. Moreover, the value for the relationship is the same to represent the distance from A to B and vice-versa. Then, if we want to represent both distances we should instanciate the pattern twice, from A to B and vice-versa, resulting in a redundant representation. |
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Aim | This pattern allows representing symmetric n-ary relationships, i.e. binary relationships between two elements that need a further argument that has the same value for both directions of the relationship. If SNAry is the symmetric n-ary relationship and z is its value for the elements x and y, then:
SNAry(x,y)=z iff SNAry(y,x)=z |
Solution description | Create a class to represent the n-ary relationship which will contain the value for the further needed argument (Relationship or Attribute). Create a relationship between this class and the classes involved in the symmetric n-ary relationship. |
Elements | Class, Relationship, Attribute
Axioms: cardinality and equivalentClass |
Implementation | |
Reusable component | |
Component type |
Origin | Modelling distance between stages of St James Way during the Geobuddies ontology network development (http://geobuddies.dia.fi.upm.es). |
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Known use | Geobuddies ontology network |
Reference | |
Related ODP | N-ary Relation: New Class (LP-NR -01) |
Used in combination with | |
Test |
No scenario is added to this Content OP.
This revision (revision ID 9934) takes in account the reviews: none
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