用于与移动单元和后端系统，其中所述移动单元包括一个本地数据库以存储自己的数据之间有限的连接传送至少一个移动单元的数据，尤其是至少一个对等的到后端系统的方法和装置 并且优选地，用于临时存储数据的至少一个另外的移动单元中，对应于所存储的自己的数据的本地索引和优选准备高速缓存的数据，其具有用于存储从至少一个移动站接收数据的主数据库后端系统中的移动单元 单元，其中所述后端系统产生对应于所存储的数据的主索引。

Method and apparatus for transmitting data of at least one mobile unit, in particular of at least one peer to a backend system with limited connectivity between the mobile unit and the back-end system, wherein the mobile unit comprises a local database to store own data and preferably, for the intermediate storage of data at least one further mobile unit, said mobile unit a local index corresponding to the stored private data and, preferably, created the cached data, the back-end system comprises a master database for storing data received from at least one mobile unit, the backend system a master index corresponding to the stored data created.