StoringRDF

I want to implement an RDF triple store. How can I do this with a relational database?

• see SWAD-Europe: Mapping Semantic Web Data with RDBMSes and LargeTripleStores

I have a legacy relational database. How can it be exposed as RDF?

• see SWAD-Europe: Mapping Semantic Web Data with RDBMSes

AnswerMe:

• What tools are out there for storing RDF? (free? commercial?)
• How fast, stable, supported are they? Do they interoperate?
• Are any test suites available? Or experimental datasets?
• Do RDF databases support inference rule languages?
• Do RDF databases support substring, phrase, text-match query interfaces such as Z39.50?
• Are there any RDF databases that claim to support all of RDF Schema?
• Are there any RDF databases that claim to support all of the DAML+OIL Note?
• What techniques have been used to store RDF in SQL systems?
• ...or in BerkeleyDB? ...or logic-programming / KR systems?
• Are there any work packages on storage and data systems? yes: EswWp10.

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