【摘要】 以全国水土保持数据库及其管理系统的建设为背景,以水土保持工作中所应用的数据为研究对象,综合分析了系统的数据流程、数据类型,并设计了系统数据库的逻辑结构和物理结构,最后展示了系统实现的功能。更多还原

【Abstract】 This thesis regards the construction and management system of soil and water conservation database as background, and views the data from soil and water conservation work as research object. Then it analyzes the data flow and data type of the system, designs the logical and physical structure of the database, and shows the functions that the system realizes.更多还原