When you select a relation in the navigator tree, the Entity Properties are displayed. This chapter described the corresponding tabs of the Entity Properties View.

Domains & Ranges

• | Domains & Ranges: Domain and Range define the classes connected by this relation. You can enter new class in the Domain column. Min and Max define the cardinalities of the relation. The last two columns (symmetric and transitive) define whether the relation is symmetric or transitive. The red cross deletes the relation between the two classes but not the relation itself. Only if the last row is deleted in the table, the relation is removed completely. |

• | Inverse Relations:The Inverse column lists the relations that are inverse to the active relation. |

NOTE: Additional Information about inverse relations:

In mathematical words, the relations r1 and r2 are inverse if we can conclude from A r1 B that B r2 A and vice versa. For example, if a person A is a parent of person B, than we can conclude that person B is a child of person A and vice versa. So the relations "is parent of" and "is child of" are inverse to each other.

OWL Properties

RDF Properties

Comments and Labels

• | Labels: Allows you to define one preferred term per language. |

• | Comments: In the text area you can write a description about the selected element in the language that is selected in the drop down box. If you want to write a description for another language, simply choose the language in the drop down box and write your description. By default, the documentation can be done in English, German and French, but you can change and reorder the languages using the OntoStudio preferences. |

NOTE: the property pages for OWL and RDF look a little different! You can edit domain and range independently!