同步復(fù)制技術(shù)可以保證移動數(shù)據(jù)庫的一致性，是移動數(shù)據(jù)庫的關(guān)鍵技術(shù)之一。本文針
對移動數(shù)據(jù)庫的斷接性、資源有限性等特點，分析同步復(fù)制技術(shù)現(xiàn)狀，將開放的syncML 協(xié)議同步協(xié)議引入數(shù)據(jù)庫，在分析syncML 同步協(xié)議組成和特點基礎(chǔ)上，研究適用于移動數(shù)據(jù)庫的雙向事務(wù)級同步過程，克服目前移動數(shù)據(jù)系統(tǒng)同步處理算法中所存在的缺陷，有效保證移動數(shù)據(jù)庫一致性，提高移動數(shù)據(jù)庫的通用性和適應(yīng)性；同時實現(xiàn)不同結(jié)構(gòu)數(shù)據(jù)庫間的數(shù)據(jù)同步，增強系統(tǒng)可擴(kuò)充性。
關(guān)鍵字：syncML，同步過程，同步引擎，雙向同步
Abstract: Synchronal replicate technology can ensure the consistency of mobile database. This paper is to analyze the current situation of synchronal replicate technology, and study the two-way sync applying to the displacement mobile database, to maintain the consistency of mobile database and improve availability and adaptability of mobile database. At the same time, it will realize the data synchronism of different database structures, to strengthen system extensibility.
Key words：syncML, synchronization processing, Sync Engine, Two-way sync