In general, predicate rewriting is a very hard problem, and full solutions do not exist yet. However , rule based systems are often useful for performing the most common rewritings. Our architecture borrows from several areas of computer science. We can thus draw on a variety of traditions and experiences. Component based software engineering is one such tradition.
Some commercial databases use data blades, analogous to our mediator blades.
Query Mapping Across Heterogeneous Information Sources . No context found. No context found. Query Mapping Across Heterogeneous Information Sources .