Abstract
Much of the existing work on fuzzy queries in relational databases has focused on simple queries, compound queries, multi-relational queries, sub-queries with weights etc. What has received less attention, however, is the fuzzy aggregation querying. In this paper, this kind of fuzzy queries is dealt with. The general forms of fuzzy aggregation queries are presented and the corresponding algorithms are also proposed. Weights are introduced into fuzzy aggregation queries. The calculations of these queries are illustrated by examples in detail.
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