Comparison RDF and GDM model

Our Graph Data Model (GDM) makes use of RDF concepts on top of the (more powerful) property graph model, which allows relationships to have not only a type, but an arbitrary number of properties. Comparison by example:

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Feature RDF GDM resource (URI resource, bnode) Node Node attribute rdf:Property instance (predicate) Relationship Type statement (subject, predicate, object) Triple Relationship (= predicate) (incl. start node (= subject) + end node (= object)) resource identifier URI **uri** property of a Node + has a node label **RESOURCE** (or **TYPE_RESOURCE**) value Literal **value** property of a Node + has a node label **LITERAL** n-ary relationships/ qualified attributes of a statement n.a. / reification property of a Relationship, e.g. **order**, **index**, **data_model** order (in a list, i.e., statements that have the same subject and predicate) n.a. / reification **order** property of a Relationship index (absolut position of a statement in a container of statements that belong to a certain Resource (cf. CBD etc.)) n.a. / reification **index** property of a Relationship provenance Named Graph **data_model** property of a Relationship