How is ontology different from object-oriented modeling?
An ontology is different from object-oriented modeling (represented in UML) in several ways. First, the most profound difference is that the ontology technology is theoretically found on logic. While ontology allows automated reasoning or infer ence, object-oriented modeling does not. Another difference is the treatment of properties; while the ontology technology treats properties as the first-class citizen, the object-oriented modeling does not. That is, while the ontology technology allows inheritance of properties, the object-oriented modeling does not. While the ontology technology allows arbitrary user-defined relationships among classes (a type property), the object-oriented modeling limits the relationship types to the subclass-superclass hierarchical relationship. While the ontology technology allows adding properties to relationships such as symmetry, transitivity, and inversion so that they are used in reasoning, the object-oriented modeling does not. While the ontology tech
