Final answer:
When defining a relation in an ontology, the name, source concept/class, target concept/class, and cardinality/multiplicity are typically provided. These components help clarify the usage and meaning of a relation within the ontology. Implementation details, while necessary at later stages, are not generally given at the point of defining the relation.
Step-by-step explanation:
When defining a relation in an ontology, several aspects are typically provided to clarify its meaning and usage. Among these, you should include the name of the relation, to clearly identify it. In addition to the name, you need to specify the source concept/class and the target concept/class, which establish where the relation begins and ends within the structure of the ontology, effectively connecting two concepts. Another crucial aspect is the cardinality/multiplicity, which defines how many instances of the target concept can be associated with each instance of the source concept. While the implementation details might also be necessary, they are usually more relevant at a later stage of ontology development. Thus, in the context of purely defining a relationship in an ontology, implementation details are not typically provided up front.