Query federation is a way to make use of distributed data sources on the Web, including many SPARQL endpoints as well as relational databases. SWObjects makes use of mapping rules represented as ...

The query clauses can be any legal query (including another "and"). At least one clause must be specified, and all the clauses must be true for the "and" clause to be true. An "or" operator is also ...

Did you know that you could calculate fields in the query in Microsoft Access? If the user wants a calculated field in a query, the user needs to input a name for the calculated field, a colon, and ...

Once again I've run into uncharted waters. The captain suggested that it might be prudent to hail Ars, to see if they had any advice.<BR><BR>I've got a report which requires data from the local ...