【摘要】 提出了一种在空间数据仓库系统下,基于主题和角色的统一的权限控制机制。将空间数据仓库的内部权限与外部权限、空间数据权限和属性数据权限统一起来。并用以支持国家自然科学基金资助重点项目--“三江并流”代表性植物空间数据仓库及其多样性研究项目的实验平台的构建。更多还原

【Abstract】 An access control mechanism,which is uniform,topic-based and role-based,is proposed for spatial data warehouse.It unifies inner-privilege and outer-privilege,spatial data privilege and attribute data privilege of spatial data warehouse.It is used to support constructing for experiment platform in national natural science foundation project--the studying project about “the three parallel rivers area” representative plant spatial data warehouse and biological diversity.更多还原