For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.
在分布式数据库系统中，由于数据的分布和冗余，查询处理变得更为复杂。
We describe a hybrid concurrency control policy using dynamic timestamp allocation method for distributed database systems.
本文描述了一个分布数据库系统的混合并发控制策略，这个策略使用了动态时间标签分配方法。
Then the security information management model in the SKJ2004 project is taken as an example to describe the implementation process of heterogeneous distributed database systems based on CORBA.
并以正在研发的数字矿井项目中的安全信息管理模块为例，介绍了基于CORBA的异构分布式数据库系统的实现方法。
To make this happen, the 2-phase-commit protocol was invented (see Principles of Distributed Database systems in Resources) and is also implemented in various systems.
为确保这一点，两步提交协议(请参阅参考资料中的分布式数据库原理)被提出且在各种系统中实现。
To make this happen, the 2-phase-commit protocol was invented (see Principles of Distributed Database systems in Resources) and is also implemented in various systems.
为确保这一点，两步提交协议(请参阅参考资料中的分布式数据库原理)被提出且在各种系统中实现。
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