Ontology harmonization and mediation systems and methods

A system comprising:

• two or more databases;
• one or more computer processing cores;
• and
• one or more memories coupled to the computer processing cores and storing program instructions executable by the processing cores to implement an ontology harmonization and mediation engine configured to issue a query across said two or more databases by:
• receiving a query targeting a first ontology
• translating the query into one or more translated queries, each translated query targeting a respective ontology different from the first ontology;
• for each of the queries:
• issuing the query to a respective said database organized according to the respective ontology of the query, and
• receiving a respective result set for the query, wherein the respective result set corresponds to the respective ontology of the query;
• for each of the translated queries:
• translating the respective result set into a translated result set corresponding to the first ontology;
• aggregating the result sets into an aggregated result set corresponding to the first ontology;
• and
• returning the aggregated results set corresponding to the first ontology.