RQL: a declarative query language for RDF
Proceedings of the 11th international conference on World Wide Web
Benchmarking RDF Schemas for the Semantic Web
ISWC '02 Proceedings of the First International Semantic Web Conference on The Semantic Web
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
A survey of approaches to automatic schema matching
The VLDB Journal — The International Journal on Very Large Data Bases
An Algebra for Semantic Interoperability of Information Sources
BIBE '01 Proceedings of the 2nd IEEE International Symposium on Bioinformatics and Bioengineering
Rondo: a programming platform for generic model management
Proceedings of the 2003 ACM SIGMOD international conference on Management of data
Viewing the semantic web through RVL lenses
Web Semantics: Science, Services and Agents on the World Wide Web
Modeling and manipulating the structure of hierarchical schemas for the web
Information Sciences: an International Journal
Application of the peer-to-peer paradigm in digital libraries
DELOS'07 Proceedings of the 1st international conference on Digital libraries: research and development
On storage policies for semantic web repositories that support versioning
ESWC'08 Proceedings of the 5th European semantic web conference on The semantic web: research and applications
SDQNET: semantic distributed querying in loosely coupled data sources
ADBIS'06 Proceedings of the 10th East European conference on Advances in Databases and Information Systems
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The Semantic Web is an extension of the current Web in which information is given well-defined meaning to support effective data discovery and integration. The RDF framework is a key issue for the Semantic Web. It can be used in resource discovery to provide better search engine capabilities, in cataloging for describing the content of thematic hierarchies in thematic catalogs and digital libraries, in knowledge sharing and exchange of Web agents, etc. Up to now, RDF schemas have been treated rather as sets of individual elements (i.e. model primitives like classes, properties, etc.). Under that view, queries like “find the part of a portal catalog which is not present in another catalog” can be answered only in a procedural way, specifying which nodes to select and how to get them. For this reason, we argue that answering such queries requires treating schemas as a whole rather than as sets of individual elements. We introduce a set of operators with set-like semantics to manage RDF schemas. The operators can be included in any RDF query language to support manipulation of RDF schemas as full-fledged objects. We also present RDFSculpt, a prototype system that implements our framework.