In source control, branching is analogous to a file system copy operation.
在源代码管理中，分支与文件系统复制操作类似。
Firstly, this paper gives a strategy to implement control method of copy for data consistency of distributed multi-database system.
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。
Traditional information security system can only safeguard information transmitting process, but can't control the decoded media data. So it can't prevent the illegal copy of the private.
信息安全技术中采取的密码学技术因仅能控制信息的传布入程，而对于解码后的媒体数据却难以控制，因而无法阻止合法使用者的非法拷贝和传布。
Traditional information security system can only safeguard information transmitting process, but can't control the decoded media data. So it can't prevent the illegal copy of the private.
信息安全技术中采取的密码学技术因仅能控制信息的传布入程，而对于解码后的媒体数据却难以控制，因而无法阻止合法使用者的非法拷贝和传布。
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