OBO Format metamodel. This meta-ontology is self-describing. OBO metamodel properties are described using OBO metamodel properties
Gives a term which may be an appropriate substitute for an obsolete term, but needs to be looked at carefully by a human expert before the replacement is done
An alternative identifier for this class; should follow ID syntax. These can result from class merges
An alias in which the alias is broader than the primary class name. Example: cell division is a broad synonym of cytokinesis
a relation between a class and an instance of a oboInOwl:Definition
we are forced to use the n-ary relation pattern in OWL1.0. For OWL2 we may make this a direct axiom between a class and the string
An alias in which the alias exhibits true synonymy. Example: ornithine cycle is an exact synonym of urea cycle
An alias in which the alias is narrower than the primary class name. Example: pyrimidine-dimer repair by photolyase is a narrow synonym of photoreactive repair
A relation between a class and an OBO namespace string. OBO namespaces are to be distinguished from IDspaces; for example, biological_process is a namespace, GO is an idspace.
An alias in which the alias is related the primary class name, but not necessarily broader or narrower. Example: cytochrome bc1 complex is a related synonym of ubiquinol-cytochrome-c reductase activity; virulence is a related synonym of pathogenesis
relation between an ontology and a oboInOwl:Subset, indicating classes in the ontology belong to the subset
A relation between a class and an alias term.
Note that this should be a super-property of hasRelatedSynonym, hasExactSynonym etc; however, we cannot state this and remain in OWL-DL
relation between a class and its identifier as an OBO ID
relation between a class and a oboInOwl:Subset, indicating the class belongs (is a member of) the subset
A relation R is cyclic if the following holds for some X, Y: X R Y, Y R X, X != Y
Gives a term which replaces an obsolete term. The value is the id of the replacement term. The value of this tag can safely be used to automatically reassign links to an obsolete term. The replaced_by tag may only be specified for obsolete terms. A single obsolete term may have more than one replaced_by tag. This tag can be used in conjunction with the consider tag.
relation between a relation and a human-readable term used to stand in for its identifier
pseudo-property. in the oboInOwl translation, all obsolete relations are subProperties of this class
The textual definition of the current term. There must be zero or one instances of this tag per term description
pseudo-class. in the oboInOwl translation, all obsolete classes are subclasses of this class. Note that this is not a metaclass
A grouping of terms from an ontology or ontologies. Note that this is not a metaclass - classes are linked to subsets via oboInOwl:inSubset
An instance of synonym usage. synonym instances are linked to classes via oboInOwl:has*Synonym properties