Triggers and inference in database systems
On knowledge base management systems: integrating artificial intelligence and d atabase technologies
Micro: a normalization tool for relational database designers
Journal of Network and Computer Applications
Migrating data-intensive web sites into the Semantic Web
Proceedings of the 2002 ACM symposium on Applied computing
A Guide to SQL
Schema Mapping as Query Discovery
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
Managing Semantic Heterogeneity with Production Rules and Persistent Queues
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases
A Reverse Engineering Approach for Migrating Data-intensive Web Sites to the Semantic Web
Proceedings of the IFIP 17th World Computer Congress - TC12 Stream on Intelligent Information Processing
The Knowledge Engineering Review
Relational.OWL: a data and schema representation format based on OWL
APCCM '05 Proceedings of the 2nd Asia-Pacific conference on Conceptual modelling - Volume 43
Theory of Relational Databases
Theory of Relational Databases
Upgrading relational legacy data to the semantic web
Proceedings of the 15th international conference on World Wide Web
Compilers: Principles, Techniques, and Tools (2nd Edition)
Compilers: Principles, Techniques, and Tools (2nd Edition)
Communications of the ACM - ACM at sixty: a look back in time
Bridging the gap between OWL and relational databases
Proceedings of the 16th international conference on World Wide Web
Mapping between Relational Database Schema and OWL Ontology for Deep Annotation
WI '06 Proceedings of the 2006 IEEE/WIC/ACM International Conference on Web Intelligence
How to Design Better Ontology Metrics
ESWC '07 Proceedings of the 4th European conference on The Semantic Web: Research and Applications
Translating SQL Applications to the Semantic Web
DEXA '08 Proceedings of the 19th international conference on Database and Expert Systems Applications
Database Systems: The Complete Book
Database Systems: The Complete Book
Building semantic mappings from databases to ontologies
AAAI'06 proceedings of the 21st national conference on Artificial intelligence - Volume 2
Automatic Extraction of Ontologies Wrapping Relational Data Sources
DEXA '09 Proceedings of the 20th International Conference on Database and Expert Systems Applications
Keys, nominals, and concrete domains
Journal of Artificial Intelligence Research
Executing SPARQL Queries over the Web of Linked Data
ISWC '09 Proceedings of the 8th International Semantic Web Conference
ISWC'06 Proceedings of the 5th international conference on The Semantic Web
OTM'05 Proceedings of the 2005 OTM Confederated international conference on On the Move to Meaningful Internet Systems: CoopIS, COA, and ODBASE - Volume Part II
On directly mapping relational databases to RDF and OWL
Proceedings of the 21st international conference on World Wide Web
Using data-to-knowledge exchange for transforming relational databases to knowledge bases
RuleML'12 Proceedings of the 6th international conference on Rules on the Web: research and applications
Semantics preservation in schema mappings within data exchange systems
KES'12 Proceedings of the 16th international conference on Knowledge Engineering, Machine Learning and Lattice Computing with Applications
Crafting a balance between big data utility and protection in the semantic data cloud
Proceedings of the 3rd International Conference on Web Intelligence, Mining and Semantics
MICAI'12 Proceedings of the 11th Mexican international conference on Advances in Artificial Intelligence - Volume Part I
Ultrawrap: SPARQL execution on relational data
Web Semantics: Science, Services and Agents on the World Wide Web
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The Semantic Web anticipates integrated access to a large number of information sources on the Internet represented as Resource Description Framework (RDF). Given the large number of websites that are backed by SQL databases, methods that automate the translation of those databases to RDF are crucial. One approach, taken by a number of researchers, is to directly map the SQL schema to an equivalent Web Ontology Language (OWL) or RDF Schema representation, which in turn, implies an RDF representation for the relational data. This paper reviews this research, and derives a consolidated, overarching set of translation rules expressible as a stratified Datalog program. We present all the possible key combinations in an SQL schema and consider their implied semantic properties. We review the approaches and characterize them with respect to the scope of their coverage of SQL constructs.