Synchronous replication technology can ensure the consistency of mobile database, and is one of the key technologies of mobile database. Aiming at the characteristics of mobile database such as disconnection and limited resources, this paper analyzes the current status of synchronous replication technology, introduces the open syncML protocol synchronization protocol into the database, and studies the two-way transaction-level synchronization process applicable to mobile database on the basis of analyzing the composition and characteristics of the syncML synchronization protocol, overcomes the defects existing in the synchronization processing algorithm of the current mobile data system, effectively ensures the consistency of mobile database, and improves the versatility and adaptability of mobile database; at the same time, it realizes data synchronization between databases of different structures and enhances system extensibility.Key words:syncML, synchronization processing, Sync Engine, Two-way sync
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