RQL: a declarative query language for RDF
Proceedings of the 11th international conference on World Wide Web
A Query Algebra for Object-Oriented Databases
Proceedings of the Sixth International Conference on Data Engineering
Sesame: A Generic Architecture for Storing and Querying RDF and RDF Schema
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
RAL: An Algebra for Querying RDF
World Wide Web
Foundations of semantic web databases
PODS '04 Proceedings of the twenty-third ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems
OntoDB: an ontology-based database for data intensive applications
DASFAA'07 Proceedings of the 12th international conference on Database systems for advanced applications
An efficient and scalable management of ontology
DASFAA'07 Proceedings of the 12th international conference on Database systems for advanced applications
Benchmarking database representations of RDF/S stores
ISWC'05 Proceedings of the 4th international conference on The Semantic Web
Querying ontology based database using OntoQL (an ontology query language)
ODBASE'06/OTM'06 Proceedings of the 2006 Confederated international conference on On the Move to Meaningful Internet Systems: CoopIS, DOA, GADA, and ODBASE - Volume Part I
A language for ontology-based metamodeling systems
ADBIS'10 Proceedings of the 14th east European conference on Advances in databases and information systems
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Nowadays, ontologies are used in a lot of diverse research fields. They provide with the capability to describe a huge set of information contents. Therefore, several approaches for storing ontologies and their instances in databases have been proposed. We call Ontology Based Database (OBDB) a database providing such a capability. Several OBDB have been developed using different ontology models and different representation schemas to store the data. This paper proposes a data model and an algebra of operators for OBDB which can be used whatever are the used ontology model and representation schema. By extending thework done for object oriented databases (OODB), we highlight the differences between OODB and OBDB both in terms of data model and query languages.