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2007 IEEE 23rd International Conference on Data Engineering (2007)
Istanbul, Turkey
Apr. 15, 2007 to Apr. 20, 2007
ISBN: 1-4244-0802-4
pp: 1382-1386
Alkis Simitsis , Nat'l Techn. Univ. of Athens, Athens, Greece,
Georgia Koutrika , University of Athens, Athens, Greece,
Yannis Ioannidis , University of Athens, Athens, Greece,
As a large fraction of available information resides in databases, the need for facilitating access for the large majority of users becomes increasingly more important. Pr?cis queries are free-form queries that generate entire multi-relation databases, which are logical subsets of existing ones. A logical subset contains not only items directly related to the given query selections but also items implicitly related to them in various ways with the purpose of providing to the user much greater insight into the original data. This paper is concerned with the definition and generation of logical database subsets based on pr?cis queries under a generalized perspective that removes several restrictions of previous work and handles queries containing multiple terms combined using the operators AND, OR, and NOT.

G. Koutrika, A. Simitsis and Y. Ioannidis, "Generalized Pr?cis Queries for Logical Database Subset Creation," 2007 IEEE 23rd International Conference on Data Engineering(ICDE), Istanbul, Turkey, 2007, pp. 1382-1386.
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