摘要
在关系数据库中,SQL只能处理精确查询,而现实中存在许多模糊查询的问题。在模糊逻辑理论的基础上,提出了关系数据库的模糊查询思路,并详细地讨论了在数值和字符属性上的实现方法。实现方法不仅对数据库的查询进行了扩展,而且对实际系统的开发也有一定的借鉴作用。
In relational databases,SQL queries can only deal with precision,but in reality there are many fuzzy queries.On the basis of the theory of fuzzy logic,this paper is proposed fuzzy query ideas based on the relational database and Numerical and character properties in the realization of the method is discussed in detail.Its method is not only the expansion of the query on the database,but also some useful reference of the actual system.
出处
《计算机与数字工程》
2009年第10期149-152,156,共5页
Computer & Digital Engineering
