doms:ContentModel_DOMS

ContentModel_DOMS is the root of the content model inheritance tree. All content models derive from this model. As all data objects in DOMS must have a content model, all data objects must adhere to the restrictions defined in this content model.

The ONTOLOGY datastream. It says that all subscribing objects must have a "doms-relations:hasLicense" relation to a object of "doms:ContentModel_License". Also, it must have one or more "doms-relations:isPartOfCollection" relations to objects of "doms:ContentModel_Collection". 

<rdf:RDF
        xmlns:owl="http://www.w3.org/2002/07/owl#"
        xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
        xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
        xml:base="http://doms.statsbiblioteket.dk/relations/default/0/1/#">

    <owl:Class rdf:about="info:fedora/doms:ContentModel_DOMS">

        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="isPartOfCollection"/>
                <owl:minCardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</owl:minCardinality>
            </owl:Restriction>
        </rdfs:subClassOf>

        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="isPartOfCollection"/>
                <owl:allValuesFrom rdf:resource="info:fedora/doms:ContentModel_Collection"/>
            </owl:Restriction>
        </rdfs:subClassOf>

        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="hasLicense"/>
                <owl:cardinality rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</owl:cardinality>
            </owl:Restriction>
        </rdfs:subClassOf>

        <rdfs:subClassOf>
            <owl:Restriction>
                <owl:onProperty rdf:resource="hasLicense"/>
                <owl:allValuesFrom rdf:resource="info:fedora/doms:ContentModel_License"/>
            </owl:Restriction>
        </rdfs:subClassOf>

    </owl:Class>

    <owl:ObjectProperty rdf:about="isPartOfCollection"/>

    <owl:ObjectProperty rdf:about="hasLicense"/>
</rdf:RDF>

DS-COMPOSITE datastream. 

<dsCompositeModel
        xmlns="info:fedora/fedora-system:def/dsCompositeModel#"
        xmlns:schema="http://doms.statsbiblioteket.dk/types/dscompositeschema/0/1/#">

    <dsTypeModel ID="DC">
        <form MIME="text/xml"/>
        <extensions name="DOMS">
            <schema:schema type="xsd" datastream="DC_SCHEMA"/>
        </extensions>
    </dsTypeModel>
    <dsTypeModel ID="POLICY">
        <form MIME="text/xml"/>
    </dsTypeModel>
    <dsTypeModel ID="STATE">
        <form MIME="text/xml"/>
        <extensions name="DOMS">
            <schema:schema type="xsd" datastream="STATE_SCHEMA"/>
        </extensions>
    </dsTypeModel>
    <dsTypeModel ID="RELS-EXT"/>
</dsCompositeModel>

In human readable format, this say that all subscribing objects must have the following datastreams "DC", "POLICY", "STATE" and "RELS-EXT". The "DC" stream must conform to the schema defined in the datastream "DC_SCHEMA", in "doms:ContentModel_DOMS". The "STATE" stream must conform to the schema in datastream "STATE_SCHEMA" in "doms:ContentModel_DOMS". To understand the use of the "STATE" datastream, see the FedoraTransactionsReplacement. The use of the "POLICY" stream is defined in FedoraLicensePolicies. The "AUDIT" stream is detailed in DomsAuditTrail.

The DC_SCHEMA stream is just an xml schema and looks like this -- REF to OAIDUBLINCORE XXXXX Regard this