You can select the most effective data base type for each domain to reduce operation cost and to provide the right level of availability for each domain.

您可以为每个域选择最有效的数据基础类型，以降低操作成本并为每个域提供正确的可用性级别。

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The mobile client may selectively to intercept the channel by the index broadcast, the average cost can be reduced through the establishment base on the data accessing probability of the index tree.

采用索引广播的方式可以使移动设备选择性地侦听信道，通过建立基于数据访问概率的索引树，以降低平均访问代价。

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The data operation on POS is to transfer data and save into data base or data files, while the member card re-emission system is used to recycle run out member card and reduce cost.

POS机上的数据操作主要是将POS机上的数据转存到数据库或数据文件中，而会员卡再发行系统则可以通过将失效会员卡循环利用，从而保证成本控制。

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