Filtering rules are not the same thing as the normalization rules that aim at reducing data redundancy 筛选规则与针对减少数据冗余的标准化规则不是一回事。
We should solve the problem of excess data and the difficulty in expression and management of the temporal db 而且目前时态数据库应解决其数据冗余大和难于表达及管理的问题。
All quorums duplicate its data to the all points of other quorums , which increase data redundancy 所有quorum通过相交节点把数据复制到其它quorum的节点中,以增加数据冗余性。
Mirroring ensures that two separate copies of the data exist at all times , providing high availability and complete data redundancy 镜像可以确保数据始终存在两个独立的副本,从而提供高可用性和完整的数据冗余。
How to solves the problems such as data exchange 、 communion difficulty and data redunance , which due to the heterogeneous system in a enterprise 如何解决企业内部系统异构性所带来的数据交换、共享困难,数据冗余度大等问题