Abstract: Optimistic replication is widely used in mobile environment. This paper presents a log-based data replication model, which records and reconciles changes to data more efficiently and causes less communication and storage overhead. Compared with traditional approach, this model is especially suited to large quantity of small data.

Key words: Optimistic replication, Data set, Log region, State vector

摘要： 乐观复制方法被广泛应用于移动环境中，提出了一种新的基于日志的数据复制方法，该方法使用相对较小的通信和存储开销，能更有效地记录数据更新以及进行数据同步，和传统的方法比，该方法更适用于小型的数据记录。

关键词: 乐观复制, 数据集, 日志域, 状态向量