# Slot: id _The unique identifier of the entity_ URI: [obographs:id](https://github.com/geneontology/obographs/id) ## Applicable Classes | Name | Description | Modifies Slot | | --- | --- | --- | | [SynonymTypeDefinition](SynonymTypeDefinition.md) | | no | | [SubsetDefinition](SubsetDefinition.md) | | no | | [Graph](Graph.md) | A graph is a collection of nodes and edges and other axioms that represents a... | no | | [Node](Node.md) | A node is a class, property, or other entity in an ontology | no | ## Properties * Range: [OboIdentifierString](OboIdentifierString.md) * Required: True ## See Also * [https://owlcollab.github.io/oboformat/doc/obo-syntax.html#2.5](https://owlcollab.github.io/oboformat/doc/obo-syntax.html#2.5) ## Identifier and Mapping Information ### Schema Source * from schema: https://github.com/geneontology/obographs ## Mappings | Mapping Type | Mapped Value | | --- | --- | | self | obographs:id | | native | obographs:id | ## LinkML Source
```yaml name: id description: The unique identifier of the entity from_schema: https://github.com/geneontology/obographs see_also: - https://owlcollab.github.io/oboformat/doc/obo-syntax.html#2.5 rank: 1000 identifier: true alias: id domain_of: - Graph - Node - SubsetDefinition - SynonymTypeDefinition range: OboIdentifierString required: true ```