Methods and apparatus for querying a relational data store using schema-less queries

A digital system for searching an RDF triples data store having a storage schema, comprising:

• a parser component that examines a schema-less, first query specifying one or more RDF triples to be identified, the parser component examines the first query for one or more tokens that represent data to be used in generating a second query and that dispatches context-specific grammar events containing that data;
• an event-processing component coupled to the parser component, the event-processing component extracts statement data from one or more events;
• a statement management/generation component coupled to the event-processing component, the statement management/generation component generates the second query so as to identify the same RDF triples identified in the schema-less, first query and so as to reflect the storage schema of the RDF triples data store.