湖南省水文数据库存贮模式设计

Storage Model Design for the Hydrological Database of Hu′nan Province

简要论述关系数据库系统ＯＲＡＣＬＥ的表、索引等数据库对象数据片的存贮分配机制；介绍了数据库对象空间需求的两种计算方法：直接计算法和模拟计算法；结合湖南省水文数据库存贮模式的设计实例，说明存贮模式设计的可行性和必要性。

This paper briefly introduces the object extent storage distribution process of relational database Oracle's list and index,two calculating methods of database object space including directive and simulating methods. The feasibility and necessity of the design for storage model are described by the case of Hu′nan Provincial Database.