Keyword Search in the Deep Web
Keyword Search in the Deep Web
The Deep Web is constituted by data that are accessible through Web pages, but not readily indexable by search engines as they are returned in dynamic pages. In this paper we propose a conceptual framework for answering keyword queries on Deep Web sources represented as relational tables with so-called access limitations. We formalize the notion of optimal answer, characterize queries for which an answer can be found, and present a method for query processing based on the construction of a query plan that minimizes the accesses to the data sources.
21 pages, 3 figures. A short version appeared in ER 2016
- Roma Tre University Italy
- University of London United Kingdom
- Birkbeck, University of London United Kingdom
- University Federico II of Naples Italy
- Polytechnic University of Milan Italy
FOS: Computer and information sciences, csis, Computer Science - Databases, Computer Science (all), Databases (cs.DB)
FOS: Computer and information sciences, csis, Computer Science - Databases, Computer Science (all), Databases (cs.DB)
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