Table 8.

BioModels.net qualifiers at the time of this writing, and a summary of their meanings. The complete list of the qualifier elements is documented online at http://biomodels.net/qualifiers/. (The definitions given above are slightly modified compared to the originals, to reflect the SBML-specific nature of this SBML specification document.)

Qualifier element	Meaning
bqmodel:is	The modeling object encoded by the SBML component is the subject of the referenced resource. This might be used, e.g., to link the model to an entry in a model database.
bqmodel:isDerivedFrom	The modeling object represented by the component of the encoded model is derived from the modeling object represented by the referenced resource. For instance, they can be the fruit of a refinement or their adaptation for use in a different context.
bqmodel:isDescribedBy	The modeling object encoded by the SBML component is described by the referenced resource. This could link a component (e.g., a reaction) to a publication describing it.
bqbiol:encodes	The biological entity represented by the model component encodes, either directly or by virtue of transitivity, the subject of the referenced resource.
bqbiol:hasPart	The biological entity represented by the SBML component includes the subject of the referenced resource, either physically or logically. This relation might be used to link a complex to a description of its components.
bqbiol:hasProperty	The subject of the referenced resource is a property of the biological entity represented by the model component. This relation might be used when a biological entity has a given activity or exerts a specific function.
bqbiol:hasVersion	The subject of the referenced resource is a version or an instance of the biological entity represented by the SBML component.
bqbiol:is	The biological entity represented by the SBML component is the subject of the referenced resource. This could serve to link a reaction to its counterpart in (e.g.) the KEGG or Reactome databases.
bqbiol:isDescribedBy	The biological entity represented by the SBML component is described by the referenced resource. This relation could be used, for example, to link a species or a parameter to a publication describing the quantity of the species or the value of the parameter.
bqbiol:isEncodedBy	The biological entity represented by the model component is encoded, either directly or by virtue of transitivity, by the subject of the referenced resource.
bqbiol:isHomologTo	The biological entity represented by the SBML component is homolog, to the subject of the referenced resource, i.e., they share a common ancestor.
bqbiol:isPartOf	The biological entity represented by the SBML component is a physical or logical part of the subject of the referenced resource. This relation might be used to link a component to the description of the complex to which it belongs.
bqbiol:isPropertyOf	The biological entity represented by the SBML component is a property of the referenced resource.
bqbiol:isVersionOf	The biological entity represented by the SBML component is a version or an instance of the subject of the referenced resource.
bqbiol:occursIn	The biological entity represented by the model component takes place in the subject of the reference resource.