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(via xmlhack)
RQL is a typed language following a functional approach (a la ODMG-OQL) and supports generalized path expressions featuring variables on both labels for nodes (i.e., classes) and edges (i.e., properties). RQL relies on a formal graph model (as opposed to other triple-based RDF QLs ) that captures the RDF modeling primitives and permits the interpretation of superimposed resource descriptions by means of one or more schemas.
If you don't want to download RQL, you can play with the online demo
Posted to xml by Ehud Lamm on 11/24/01; 9:13:04 AM
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RDF query language interpreter
