KG-ER is a formally defined conceptual schema language for knowledge graphs, with entity, relationship, attribute, tree-pattern key, and hierarchy constraints, targeting representation-independent design across relational, property graph, and RDF systems.
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The KG-ER Conceptual Schema Language
KG-ER is a formally defined conceptual schema language for knowledge graphs, with entity, relationship, attribute, tree-pattern key, and hierarchy constraints, targeting representation-independent design across relational, property graph, and RDF systems.