Also, the distributed structure defined early on is still in place: Directory services are distributed across a network, with each distributed service maintaining a portion of the global database.
同样，早年定义的分布结构现仍存在：目录服务分布在整个网络中，每种分布式服务保存着整个数据库的一部分。
Aiming at the dynamic characteristic of the data directory in distributed and parallel database system (DPDBS), the dynamic arithmetic for whole data directory is put forward.
针对分布式并行数据库系统DPDBS中数据库副本数、数据库分布等信息的动态性，提出全局数据目录的动态管理和维护算法。
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