One Engine for Labeled Property Graphs, Schema, and Ontology Graphs

• From: Saqib Ali | Date: Wed, 17 Jun 2026 01:54:46 +0000 #
  Subject: One Engine for Labeled Property Graphs, Schema, and Ontology Graphs

  Ultipa GQLDB unifies LPG, schema-validated LPG, and ontology semantics in a single storage engine and query planner, with OPEN, CLOSED, and ONTOLOGY modes differing only in enforcement layers rather than underlying data structures. CLOSED graphs enforce strict schemas- e.g.: CREATE NODE TYPE Person (name STRING NOT NULL, age INT); CREATE EDGE TYPE WorksAt (FROM Person, TO Company); with the engine rejecting writes like INSERT (p:Person {age:"abc"}) ONTOLOGY graphs add OWL-style semantics, supporting class hierarchies and property constraints such as: CREATE CLASS @ex:Employee EXTENDS @ex:Person and object-property definitions like CREATE OBJECT PROPERTY @ex:manages DOMAIN @ex:Manager RANGE @ex:Employee. Queries can mix LPG and ontology semantics, including IRI-aware matching such as MATCH (n @=ex:Alice)-[:KNOWS]->(m) and hybrid patterns like MATCH (p:Person @ex:Employee)-[:WORKS_AT]->(c:Company) Read more: https://www.linkedin.com/pulse/sides-ultipa-gqldb-supports-both-lpg-ontology-ultipa-imqse/

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