From DeveloperWorks, Creating flexible service-oriented business solutions with WebSphere Business Services Fabric, Part 2: Extending the ontology models

Learn how you can leverage the features of WebSphere Business Services
Fabric to build composite business applications that support dynamic binding
and orchestration. In Part 2, you’ll learn how to model the variability points
in the business process as ontology extensions using the Fabric Modeling Too

Probably the most important piece of the WebSphere Business Services Fabric product is the support for Ontologies. Ontologies is basically an open-standard modeling framework for defining the relationship between objects and is the core model that fabric uses for policy enforcement.

This article outlines what you need to do to extend the ontologies shipped with fabric.