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安徽省农业科学院研制的农业科技管理信息系统 ,在数据查询功能上 ,采用SQL结构化查询语言 ,查询关系丰富。介绍了在该系统数据查询过程中如何灵活运用查询关系的检索技巧
Agricultural Science and Technology Management Information System developed by Anhui Academy of Agricultural Sciences adopts SQL structured query language for data query function, and has rich query relation. This paper introduces how to make use of the query technique in the system data query