A textbook for a graduate course on the subject. Chen (economics and management, Tsinghua U., Beijing) addresses such fundamental issues in fuzzy data modeling as data representation, integrity constraints, conceptual modeling, and database design. The goal of introducing fuzzy logic is to enhance the classical models such that uncertain and imprecise information can be represented and manipulated. Begins the Chinese Studies in Information Science series, which also includes a work on software defect and operational profile modeling. Annotation c. by Book News, Inc., Portland, Or.