- Wikipedia
- https://en.wikipedia.org/wiki/Ontology_(information_science)
- https://en.wikipedia.org/wiki/Ontology_alignment
- https://en.wikipedia.org/wiki/Lightweight_ontology
- https://en.wikipedia.org/wiki/Ontology-based_data_integration
- https://en.wikipedia.org/wiki/Semantic_equivalence
- https://en.wikipedia.org/wiki/Minimal_mappings
- https://en.wikipedia.org/wiki/Semantic_integration
- https://en.wikipedia.org/wiki/Semantic_matching
- https://en.wikipedia.org/wiki/Semantic_heterogeneity