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cody.burleson (3) [Avatar] Offline
Could work in first paragraph as proposed in bold below, perhaps...

5.2.2 Querying multiple RDF files

SPARQL, unlike SQL isn’t limited to querying a single data source. We can use SPARQL to query multiple files, Web resources, databases or a combination thereof. A SPARQL query across diverse data sources is commonly referred to as a federated query. A simple example will make it more clear.

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cody.burleson (3) [Avatar] Offline
Re: Section 5.2.2. - Recommend at least a minor reference "federated query".
Actually, I take that back. After reading further, I'm not sure that's an appropriate spot; it just confuses the simplicity of your build-up. In the context of just using ARQ across multiple files, now I'm not sure I would actually think of that as a federated query.