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Deque: querying the deep web


In this paper, we present a system called DEQUE (Deep WEb QUery SystEm) for modeling and querying the deep Web. We propose a data model for representing and storing HTML forms, and a web form query language called DEQUEL for retrieving data from the deep Web and storing them in the format convenient for additional processing. Our system is able to query forms (single and consecutive) with input values from relations as well as from result pages (results of querying web forms). We present a novel approach in modeling of consecutive forms and introduce the concept of the super form. A prototype system has been implemented on a SUN workstation working under Solaris 2.7 using Perl version 5.005_2 and employing MySQL (version 3.23.49) DBMS as the data storage.

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