- From: Dirk-Willem van Gulik <dirkx@webweaving.org>
- Date: Fri, 17 Sep 2004 08:54:44 -0700 (PDT)
- To: public-rdf-dawg@w3.org
4.2 data integration and aggregation
RDF can be used for data integration and aggregation. RDF repositories
are built by merging RDF triples from one or more locations. Such as
other RDF repositories or from non-RDF sources converted to RDF.
Such an aggregations can be real or virtual.
4.2.1 Querying Multiple Sources
It must be possible for the query language and protocol to allow an
RDF repository to expose the source from which that query server
collected a triple or subgraph.
Note: If may be possible for a triple to actually be listed
at multiple sources.
4.2.2. Querying the Origins of Statements
It should be possible for a query to specify which sources, as defined in
4.2.1 the query is executed against.
If more than one RDF graph is specified, the result is as if the query
had been executed against the merge of the specified RDF graphs.
4.2.3 Querying Multiple Repositories
It should be possible for a query engine to query multiple repositories.
Received on Friday, 17 September 2004 16:07:14 UTC