On using high-level structured queries for integrating deep-web information sources

摘要: The actual value of the Deep Web comes from integrating data its applications provide. Such offer human-oriented search forms as their entry points, and there exists a number tools that are used to fill them in retrieve resulting pages programmatically. Solution rely on these usually costly, which motivated researchers work virtual integration, also known metasearch. Virtual integration abstracts away by providing unified form, i.e., programmer fills it system translates into application forms. We argue costs might be reduced further if another abstraction level is provided issuing structured queries high-level languages such SQL, XQuery or SPARQL; this helps abstract As far we know, not proposal literature addresses problem. In paper, propose reference framework called IntegraWeb solve problems using perform deep-web integration. Furthermore, provide comprehensive report existing proposals database research fields, can combination address our problem within previous framework.