Access Control for Spatial Databases

该项目的重点是为空间数据库，特别是地理空间和移动对象数据库开发访问控制模型、机制和系统。低成本的商业高分辨率卫星图像，再加上可公开获得的数据，可能会对国家安全和隐私构成重大威胁。在共享移动用户的位置和档案信息时，移动对象数据库中也存在类似的安全和隐私问题。为了解决这些问题，拟议的研究将做出几项创新贡献，包括：根据图像的分辨率和时空属性并以表格数据为基础，为指定地理空间数据的访问控制政策开发一个全面的授权模型；设计一个统一的索引结构来管理地理空间授权以及有效处理访问请求的地理空间对象；为移动对象数据库开发访问控制模型，通过保护移动用户的概况、当前位置和移动信息来确保他们的隐私；以及开发授权和移动对象的组合索引。如果成功，将开发的解决方案将有助于为地理空间和移动物体数据库建立强大和强大的访问控制模块，这可能会影响卫星工业和移动商业的应用。

The focus of this project is to develop access control models, mechanisms and systems for spatial databases, in particular, geospatial and moving object databases. Low-cost commercial high-resolution satellite imagery, when coupled with the publicly available data, may pose significant threats to national security and privacy. Similar security and privacy concerns exist in moving object databases when sharing the location and profileinformation of mobile users. To address these issues, the proposed research will make several novel contributions including: development of a comprehensive authorization model for specifying access control policies for geospatial data based on the resolution and spatio-temporal attributes of the images, and based on the tabular data; devising a unified indexing structure to manage the geospatial authorizations as well as geospatial objects for efficient processing of access requests; development of an access control model for moving object databases to ensure the privacy of mobile consumers by protecting their profile, current location and movement information; and development of a combined index for authorizations and moving objects. The solutions to be developed, if successful, will help in building robust and powerful access control modules for geospatial and moving object databases, that may influence applications in satellite industry and mobile commerce.