摘要
针对OLAP系统存在的数据仓库敏感信息泄漏的问题,及已有的推理研究都是以数据立方体为粒度,细粒度的切片推理仍然存在的问题,提出了以切片为推理单元的推理控制方法。该方法将推理粒度细化到切片,使每次查询生成对应的切片格,根据格的依赖关系判定是否存在推理通道,实现动态地防止单切片的推理,提高了敏感信息的保护力度。
Aiming at the problem of sensitive information leakage in data warehouse and OLAP system, and the existing inference control methods are based on date cube ignoring the fine-grained slice reasoning. This paper presents an inference control method based on slice. This method refines inference granularity to slice and deals with each query corresponding to slice grid, which can prevent a single slice of reasoning and increases efforts to the protection of sensitive information according to the judgment of the slice grid dependencies＇ inference channel.
出处
《计算机科学》
CSCD
北大核心
2013年第06A期149-152,共4页
Computer Science
基金
广东省科技计划基金项目(2009B010800036)
广东省教育科研基金项目(BKYBJG20060235)资助
