74.783 Distributed Database System Project Query Evaluation and Web Recognition in Document Databases
نویسندگان
چکیده
A web and document databases (WDDB) is a system to manage efficiently local documents and semantic connection to remote databases. WDDB integrates search engine, query treatment and document management and provide a powerful mechanism to guide the access of information sources distributed all over the world. One WDDB system includes a local document database, a web connector, and a web recognizer. The query in WDDB system is a path-oriented query, and composed by local query and remote query. The query can be implemented by using tree-embedding algorithm and signature mechanism. WDDB system can send query to remote documents databases and get the result through web connector if the query cannot retrieval results in local database. In addition, WDDB system can collect internet information using the web recognizer efficiently.
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