US 12561339 B2 / Feb 24, 2026

Providing a unified query interface across multiple ontology-based databases

A system for providing a unified query interface across multiple ontology-based databases and related methods are disclosed. The system is programmed to receive calls to an application programming interface for querying an ontology, where ontology data is represented in different databases respectively in different forms. For each function being called, system is programmed to select a database from the different databases based on the function type and each ontology entity type being processed by the function. The system is further programmed to retrieve data from each selected database, merge the retrieval results as appropriate, and transform the final result to ontology data in response to the calls.