schema.md

Ontology Graph

A property graph for ontologies based on OBO/OWL ontology structures.

Ontology

The root of the ontology

Keys: id

Properties

Property	Type	Description
data-version	string	a version string
date	datetime	the creation date of the ontology
default-namespace	string	the default namespace to use for the ontology
format-version	string	the input format version
id	string	an identifier for the ontology in the graph
ontology	string	the identifier for the ontology which may be the same as the id
remark	string	a comment
saved-by	string	an identification of the process that generated the format

Relations

Relation	Directed	Target
:subsetdef	yes	:Subset
	A subset of the ontology. Terms identify themselves as member of a subset.
:term	yes	:Term
	a term belonging to the ontology
:typedef	yes	:Typedef
	a type definition belonging to the ontology

Term

Keys: id

Properties

Property	Type	Description
comment	string
created_by	string
creation_date	string
def	string
id	string	an identifier for the term in the graph. This is often the same as name
is_obsolete	string
name	string	the term identifier in the ontology

Relations

Relation	Directed	Target
:alias	yes	:Term
:def	yes	:Resource
:subset	yes	:Subset
:synonym	yes	:XRef
:xref	yes	:XRef
:is_a	yes	:Term
:disjoint_from	yes	:Term

Typedef

Keys: id

Properties

Property	Type	Description
def	string
name	string

Relations

Relation	Directed	Target
:def	yes	:Resource

Resource

Keys: url

Subset

Keys: id

Properties

Property	Type	Description
description	string

XRef

Keys: id

Properties

Property	Type	Description
related	string
relation	string