While your personal computer only keeps one copy of a file, large-scale services like Facebook rely on what are called content delivery networks to manage data and distribution.
虽然你的个人电脑只能保存一个文件的一个副本，但像Facebook 这样的大型服务项目，则会依赖于所谓的内容分发网络来管理数据和分发。
Essentially this is a data copy which in middleware is very expensive and should be avoided.
本质上这意味着数据拷贝，这在中间件是十分昂贵的操作应当予以避免。
A private copy of all process data and control behavior defined within an event handler is provided to each instance of an event handler.
将为事件处理程序的每个实例提供该事件处理程序内定义的所有进程数据和控制行为的私有副本。
Then, each partition of data is run through a copy of the same process at the same time.
然后，每个数据分区在同一时间通过流程的一个副本运行。
When a controller wants to get data from the view, the view provides a copy of the model populated with the current UI contents.
当一个控制器需要从视图获取数据时，视图提供模型的一个副本，其中包含当前的UI内容。
Assume that service implementations are working on a transient copy of the data that might have been transferred, transformed, or both from its original source.
假设服务执行会在数据的临时拷贝上进行，数据应该从它的原始源来转移、转换或者即转移又转换。
But maybe you do want to create a spare volume group on the source LPAR and create a file system and copy data to it.
但您也可能想要在源lpar上创建一个空闲卷组并创建一个文件系统，然后将数据复制进去。
Any update made on this primary server is immediately replicated to the secondary server so as to maintain a copy of the active data.
对主要服务器的任何更新会立即复制到辅助服务器，以维护一个活动数据副本。
Buildings are flaky they burn down all the time, so how do we make sure that there is a remote copy of your data in another location, that's the simple stuff.
楼房可能很脆弱，他们随时可能被烧毁，所以我们如何确保，在另一个地方我们的数据也有备份，这都是比较简单的事务。
Assume that service implementations are working on a transient copy of the data that may have been transferred, transformed, or both from its original source.
假定服务实现工作在一个可能已经被从其最初源转移或者转换的数据的瞬时副本上。
Verification compares the data in a field to an existing copy of the data.
验证将域中的数据与现有的数据副本进行比较。
The student had asked Ruggiero for a copy of the original data for a certain experiment, and Ruggiero had refused.
那个学生曾因为一个实验向鲁杰罗索要原始数据的副本，但鲁杰罗拒绝了。
Of course, just because your users want a copy of their data doesn't necessarily mean that they're abandoning your product.
当然，用户想要一份数据的副本并不一定意味着他们要放弃你的产品。
When extracting strings from a set of input data, try to return a substring of the original data, instead of creating a copy.
当从原始的输入数据中提取字符串时，试着从原始字符串返回一个子字符串，而不是创建一份拷贝。
The view can have direct contact with the model, but it also works with a copy of the model as a means of passing data to the controller.
视图可以直接与模型交互，但是它也使用模型的一个副本，以便将数据传递给控制器。
Even if users have a copy of their data, it can still be locked in if it's in a proprietary format.
如果以专有的格式存储，就算用户有了数据的副本，依然是被锁定的。
That saves you having to allocate additional storage to hold a copy of your data.
它为您节省了保存数据副本所需的额外空间。
For example, having a copy of the data allows a business to operate in the event of a problem with the first environment.
例如，一个服务器出现故障时，使用该服务器上的数据的备份可使公司正常运营。
Tape provides another technical differentiator from disk systems that addresses both security and data protection concerns: a completely offline copy of data.
磁带提供与磁盘系统不同的技术区别，离线备份能够解决安全和数据保护问题。
A Q subscription maps the DB2 table that contains your source data to a copy of that table at the non-DB2 target database.
Q订阅将包含源数据的db2表映射至非db 2目标数据库中的表副本。
In this article, I demonstrate different methods to move or copy data at a filesystem and logical volume level focusing on the following AIX utilities: CPLV, tar, and cp.
在本文中，我会演示在文件系统和逻辑卷级上转移或复制数据的不同方法，主要关注以下AIX实用程序：cplv、tar和cp。
Bulk data copy — a new DB2BulkCopyOperation class provides the ability to bulk copy data in DB2 tables.
批量数据复制——新的DB 2 bulkcopyoperation类提供了批量复制db2表中的数据的能力。
A third copy is performed to put the data into a kernel address space buffer again.
数据从用户空间缓冲区被再次复制到内核空间缓冲区，完成了第3次复制。
If you do not write a correct code for the copy constructor, object within a list will have some data members uninitialized.
如果你没有为拷贝构造函数写正确的代码，就有可能造成list中对象的某些数据成员没有初始化。
Second, whenever an object changes its role — perhaps you hire one of your graduating students to become a professor — you need to copy the data into the appropriate table and assign it a new OID.
第二，无论何时，只要对象更改了它的角色-可能您聘用了您一个刚毕业的学生作为教授-则需要将数据复制到相应的表中，并为它指定一个新的OID。
An alternative is to have a background process copy the data periodically to a local store.
一个替代方法是让一个后台进程定期将数据复制到一个本地存储。
Only the users who can provide a secret password can view, copy, or modify encrypted data.
只有能提供密码的用户可以查看、复制或修改被加密的数据。
As mentioned earlier, an unmodified permanent storage page can just be released without being written to the file system, since the file system contains a pristine copy of the data.
如前所述，可以直接释放没有经过修改的永久存储分页，无需将其写入到文件系统中，因为文件系统包含该数据的原始副本。
This hardware contains a working copy of all the company's current data and is considered confidential.
这个硬件包含公司的所有当前数据的有效副本并且认为是机密。
Instead, use a database copy or a data propagation utility.
你可以用数据库复制或者数据移植工具来代替。
应用推荐