也可以在数据库系统没有离线的情况下执行离线备份，方法是当复制数据库目录的时候冻结系统（阻塞所有写操作）。
Offline backup can also be performed without bringing the database system offline by freezing the system (blocking all write operations) while copying the database directory.
Derby数据库系统(二进制文件和数据库)可以复制到任何带有J2SEJVM的平台，并且无需重新编译或作其他修改就能运行。
A Derby database system (binaries and database) can be copied to any platform with a J2SE JVM and run without performing a rebuild or other alterations.
在分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In distributed database systems, database systems for the reproduction of the reliability and efficiency play a very crucial role.
在大规模的分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In the extensive distributed data base system, the data base duplication plays a very key role to the dependability and efficiency of the system.
针对这种问题，介绍和分析了当前解决数据集成的几种主要方式：多数据库系统，数据的复制、迁移和转换，中间件技术。
About the question, we introduce that dealing with it have several mostly format currently, for instance, more databases system, copy, moving transforming of data, and middleware technology.
针对分布式多数据库系统的数据一致性，提出了一种复制控制法的实现策略。
Firstly, this paper gives a strategy to implement control method of copy for data consistency of distributed multi-database system.
此外，高可用性正变得越来越可扩展事务数据库系统的关键，通常是通过复制和实现自动故障转移在一个崩溃的情况下。
In addition, high availability is becoming ever more crucial in scalable transactional database systems, and is typically accomplished via replication and automatic fail-over in the case of a crash.
我如何通过复制机制提高整个数据库系统的性能？
How can I use replication to improve performance of my system?
我如何通过复制机制提高整个数据库系统的性能？
How can I use replication to improve performance of my system?
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