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A Relation represents a versioned connection / relationship between two artifacts. Relations can be directed or un-directed. Relations are owned by a container. The source and target artifacts of a relation may be in different containers (inter-model relation) or same container (intra-model relation). An example inter-mode relation is the relation between a block in a SysML model and a requirement in a Jama project. An example of an intra-model relation is the dependency relation between a block and a requirement in the same SysML model.
The detailed API model, endpoints, and documentation are covered in the next section (Interactive Documentation).