Fuzzy databases have been studied in many works and papers, but, in general, these works study some particular area and many works of theoretical, with very little real application. Research Handbook Fuzzy Information Processing in Databases provides comprehensive coverage and definitions of the most important issues, concepts, trends, and technology in fuzzy topics applied to databases, discussing current investigation into uncertainty and imprecision management by means of fuzzy sets and fuzzy logic in the field of database and data mining.