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Ontology-Based Data Access (OBDA) is a semantic web-based data management approach aimed at making heterogeneous and dispersed data sources meaningful, accessible, and interoperable. The OBDA model enables users to perform high-level queries without needing to understand technical details, by allowing definitions to be made at a conceptual level. This provides advantages in terms of data integration, accessibility, and reusability. OBDA systems generally consist of three core components: an onto