【作者】 余敦；

【Author】 Yu Dun (College of land resource and environment,Jiangxi Agricultural University,Nanchang 330045)

【机构】 江西农业大学国土资源与环境学院；

【摘要】 开发农用地分等定级估价信息系统旨在对空间信息和属性信息进行统一管理,提高农用地分等定级估价的科学化和自动化水平。在开发研制农用地分等定级估价信息系统前,要对所研制的系统进行数据分析。本文采用结构化分析方法,从数据流图和数据字典两方面,对江西省农用地分等定级估价信息系统进行数据分析,以便形成新系统的逻辑模型,既为系统设计奠定基础,也为系统的使用和维护提供技术支持。更多还原

【Abstract】 In order to unified manage spatial and attribute information,and improve scientificity and auto- mation,the agricultural land gradation,classification and evaluation information system was designed.Be- fore the agricultural land gradation,classification and evaluation information system was developed,the da- ta must be analyzed.From data flow diagram and data dictionary two aspects,the data of the agricultural land gradation,classification and evaluation information system of Jiangxi province has been analyzed by the method of structured analysis in this paper,so as to form the new system’s logistic model.Data analysis not only lays is the foundation for the system design,but also the technical support for system’s use and the maintenance.更多还原