Some relevant functions of fuzzy words' membership function and fuzzy language operators' membership function and storage procedures for realizing the data query are defined in SQL, those aim at the reality of fuzzy query of person information manage databases.
张婷. 精确数据的模糊查询工具的设计与实现
[J]. 现代图书情报技术, 2004, 20(12): 36-39.
Zhang Ting. The Design and Reality of Fuzzy Query Tool Based on Exact Data. New Technology of Library and Information Service, 2004, 20(12): 36-39.