离线应用本地数据存储设计与实现.pdf
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( ) 计算机工程与设计 Computer Engineering and Design
1236 2010,31 6 计算机工程与设计 Computer Engineering and Design
信息化技术
离线应用本地数据存储设计与实现
吴良波, 金连甫
(浙江大学计算机科学与技术学院,浙江杭州310027)
摘 要:为解决离线应用系统中本地数据数据存储问题,设计与实现一个以开源数据库SQLite 为底层存储的数据存储方案。
针对开源SQLite 数据库只支持明文存储的不足,提供了两种可选的加密解密算法,并研究和评估了这两种不同的加密解密
算法对数据存储效率的影响。在实现本地数据存储层的基础上,提出了一种实用的数据存储模型,以方便离线应用结构化
数据的存取。
关键词:数据库; 离线应用; 计算机网络; 数据存储模型; 加密/ 解密
中图法分类号:TP311.13 文献标识码:A 文章编号:1000-7024 (20 10) 06-1236-04
Design and implemetation of local data storage for offline application
WU Liang-bo, JIN Lian-fu
(Department of Computer Science and Technology, Zhej iang University, Hangzhou 310027, China)
Abstract :To solve the problem of local data storage in offline application system, a data storage solution using open source database
SQLite as the underlying storage is designed and implemented. To overcome shortcomings of only supporting cleartext storage for the
open source database SQLite, two optional encrypt and decrypt algorithms is presented and the storing and retrieving efficiency of the
two different algorithms is studied and evaluated. Meanwhile a new practical data storage model based on this local data storage layer
for easily storing and retrieving the structural data of offline application is put forward.
Key words :database; offline application; computer networking; data storage model; encrypt/decrypt
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方案,不仅支持复杂的数据操作,还支持数据加密 ,并对其性
0 引 言
能进行了分析。最后还提出了一个比较实用的数据存储模
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