摘要
建议采用一种提供反馈的系统 ,便于用户更好地理解查询 .该系统是一种基于规则的系统 ,除了能为查询提供英文翻译外 ,它也能确定语法错误 ,还能发现可能的语义错误 ,并提出可能的解决方法 .该系统是为一种基于实体 -联系模型的查询语言而实现的 ,它期望能得到更好的用户性能 .
A major difficulty of query writing is that users do not fully understand queries. A system providing feedback is proposed so as to enable users to better understand their queries. It is a rule based system. In addition to providing an English translation for the query, it pinpoints syntax errors, and provides possible solutions. It also finds likely semantic errors, and provides possible solutions. The system was implemented for a query language based on the entity relationship model. It is expected to lead to better user performance. Empirical testing showed significant improvement in user performance with the feedback system.
出处
《武汉水利电力大学学报》
EI
CSCD
2000年第2期93-96,共4页
Engineering Journal of Wuhan University
关键词
用户接口
反馈
数据库系统
E-R模型
查询语言
query language
user interface
feedback
user performance
entity relationship model
