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Re: [ontolog-forum] Need advice

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Barkmeyer, Edward J" <edward.barkmeyer@xxxxxxxx>
Date: Fri, 12 Dec 2014 23:11:53 +0000
Message-id: <7349b96301a34bcb801be3bf3eb80c58@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>

Duane,

 

INVERSE is the term used in OWL and EXPRESS.  Nijssen and the SBVR lot refer to ‘alternative readings’ and ‘synonymous forms’, seeing both of these as statements about a single ‘relationship’.  OWL sees two ‘properties’ that are related by an ‘InverseProperty’ axiom.   UML sees one ‘association’ with two ‘properties’, but does not provide a term for the relationship between the properties per se.  EXPRESS says there is one ‘relationship’ created by two ‘attributes’, one of which is the INVERSE of the other.

 

-Ed

 

From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx [mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Duane Nickull
Sent: Friday, December 12, 2014 6:02 PM
To: [ontolog-forum]
Subject: [ontolog-forum] Need advice

 

What would be a suitable term to call a binary relationship that is co-dependent yet not symmetrical to another relationship between the same entity in a binary relationship?  

 

If "John is a father of Chris”, how can we describe that relationship in terms of comparing it to “Chris is a son of John”?  Would “isomorphic”  be the best term to use? “Inverse”? Assume that the relationship is traversable from either side.

 

The context of this is in a graph database discussion group.  Graph Databases have nodes and relationships.  Either can have properties.  Unlike RDBMS systems, graph databases have relationships between instances of nodes, not a foreign key relationship with an entire table.

 

The binary relationship is not symmetric since true symmetry would require that the statements “..is a father of…” and “…is a son of…” be equally true for A-B as they are for B-A.

 

Sorry for this simple request.  I am just trying to find the best description for this.

 

Duane Nickull

******************************

CTO - Hot Tomali/Cientis/Cheddar Labs

 

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