Indexing principles for a fuzzy data base

摘要

Up to now, many theoretical works about fuzzy databases have been defined by designing some extension of the relational model. Our purpose is to discuss some implementation aspects related to these databases. This point of view does not seem to be a usual concern of such systems, whereas it is of prime importance with respect to their future performances. We focus on the evaluation of a class of queries, called mono-attribute restrictions. We show how some basic principles can be applied to improve such a “fuzzy associative” retrieval, by means of an indexing-like access method. Lastly, some implementation solutions are presented.