- From: Greg Karvounarakis <gregkar@ics.forth.gr>
- Date: Mon, 8 Jan 2001 15:34:12 +0200 (EET)
- To: www-rdf-interest@w3.org
- cc: www-rdf-logic@w3.org, semantic-web@w3.org
Dear all, we would like to announce RDFSuite, a set of tools for parsing, storing and querying RDF metadata. You can find our paper at: HTML: http://www.ics.forth.gr/proj/isst/RDF/RSSDB/index.html (looks better in PCs with symbol fonts) PDF: http://www.ics.forth.gr/proj/isst/RDF/RSSDB/rdfsuite.pdf PS: http://www.ics.forth.gr/proj/isst/RDF/RSSDB/rdfsuite.ps A short abstract follows. We really invite interested readers to send us their comments and/or suggestions. Best regards Greg Karvounarakis ======================================================================== The RDFSuite: Managing Voluminous RDF Description Bases Metadata are widely used in order to fully exploit information resources available on corporate intranets or the Internet. The Resource Description Framework (RDF) aims at facilitating the creation and exchange of metadata as any other Web data. The growing number of available information resources and the proliferation of description services in various user communities, lead nowadays to large volumes of RDF metadata. Managing such RDF resource descriptions and schemas with existing low-level APIs and file-based implementations does not ensure fast deployment and easy maintenance of real-scale RDF applications. In this paper, we advocate the use of database technology to support declarative access, as well as, logical and physical independence for voluminous RDF description bases. We present RDFSuite, a suite of tools for RDF validation, storage and querying. Specifically, we introduce a formal data model for RDF description bases created using multiple schemas. Compared to the current status of the W3C standard, our model relies on a complete set of validation constraints for the core RDF/S (without reification) and provides a richer type system including several basic types as well as union types. Next, we present the design of a persistent RDF Store (RSSDB) for loading resource descriptions in an object-relational DBMS by exploring the available RDF schema knowledge. Our approach preserves the flexibility of RDF in refining schemas and/or enriching descriptions at any time, whilst it ensures good performance for storing and querying voluminous RDF descriptions. Last, we briefly present RQL, a declarative language for querying both RDF descriptions and schemas, and sketch query evaluation on top of RSSDB.
Received on Monday, 8 January 2001 08:35:26 UTC