| 摘要 |
An efficient and layered synchronization protocol for database systems is disclosed. A mechanism is provided for efficient synchronization of data between storage systems such as relational databases, object stores, etc. Synchronization capabilities may be defined and grouped into several levels that support specific scenarios. The levels may be defined in increasing order of capabilities. Such a synchronization protocol may be designed to work over communication protocols, such as HTTP, for example, between mobile devices and servers. The synchronization protocol may be an XML-based protocol that includes an envelope for handling extensibility and modularity and a body for representing data and metadata within the envelope.
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