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In this paper, we describe the query interfaces of a prac-tical biological database system -GPCRDB. Distinguishing

Summary: Abstract
In this paper, we describe the query interfaces of a prac-
tical biological database system - GPCRDB. Distinguishing
features of the system include: an embedded smart query
engine (for query relaxation), smooth integration of naviga-
tion with the more conventional SQL-based query mecha-
nisms, and the top-down style of incremental query result
presentation combined with flexible navigation capabilities.
Query relaxation is important due to the fact that queries
tend not to be expressed exactly by the users, particularly
when complex domain knowledge is involved. Navigation
capability is desired because it can be an ideal supplement
to SQL-based query mechanisms when large, complex data
sets are concerned, especially in the WWW environment
where hyperlinks are heavily used. Top-down incremental
presentation is one of the best ways for a user to conduct the
data presentation/retrieval process more reasonably and ef-
ficiently toward the point of interest of the user without be-
ing lost in (unwanted) details
1. Introduction


Source: Aberer, Karl - Faculté Informatique et Communications, Ecole Polytechnique Fédérale de Lausanne


Collections: Computer Technologies and Information Sciences