另外，可以轻松地维护数据模型。
设计者不必同时维护数据和表示。
As a designer, you are freed from the need to maintain both data and presentation.
在这个例子中，我们仅维护数据的一个副本。
然后解决维护数据收集与处理问题。
Then solves the problem of data collection and data transaction in maintenance.
建立和维护数据处理和计算机编码文件。
Establish and maintain data processing and computer code files.
第三，很难在支持多个角色的同时仍维护数据完整性。
Third, it is difficult to support multiple roles and still maintain data integrity.
该信息对于管理和维护数据仓库的技术人员来说是必要的。
This information is necessary for the technical staff that manages and maintains the data warehouse.
现在您可以使用Geronimo事务来维护数据完整性了。
Now you can take advantage of using transactions with Geronimo to maintain data integrity.
为了帮助分析，请看79页的表《房屋每年维护数据》。
To help with our analysis consult the annual property operating data form on page79.
我们需要为每个设备维护数据信息，这通过跟踪日志完成。
We need to maintain data information in the trace log for each device.
通过这种方式，您可以维护数据访问历史，即使访问本身没有被提交。
This way, you can maintain a history of who had access to the data, even if the access itself was not committed.
触发器是DBMS中提供的一种用来维护数据完整性的机制。
The trigger is a mechanism offered by DBMS to keep the integrity of data.
这能够帮助他们在如何处理他们的应用程序中的那些数据方面维护依从性。
This can help them maintain compliance in how they handle that data in their applications.
它们通常在客户端维护大量会话数据，这有助于提高性能。
They normally maintain large session data at the client side, which improves performance.
今天早上，在我们其中一个欧洲数据中心，举办了一个例行的维护活动。
This morning, there was a routine maintenance event in one of our European data centers.
这个维护窗口可以被用来为应用软件打补丁和数据备份。
The maintenance window is used for application software patching, as well as data backups.
一种就是维护操作和数据仓库的键的转换表。
One is to maintain a translation table of operational and data warehouse keys.
企业通常维护并艰难地管理大量物理上不同的数据格式。
Enterprises typically maintain, and have difficulty managing, a large number of physically different data formats.
至少，在内存维护两次数据会使效率下降。
At the very least, maintaining the data in memory twice is inefficient.
这种物化查询表中的数据是由系统维护的。
The data in this type of materialized query table is maintained by the system.
这里只重点介绍其中一些工具：常见的数据移动和数据维护实用工具。
Only a few tools have been highlighted: common data movement utilities and data maintenance utilities.
数据完整性是在安全的网络连接上异步地维护的。
Data integrity is maintained asynchronously over secure network connections.
恢复之后维护相同的数据。
现在大多数应用程序代码都在数据库服务器中维护和运行。
Most of the application code is now maintained and run in the database server.
请记住，业务逻辑和安全数据应该在服务器上进行维护。
Keep in mind that business logic and secure data should be maintained on the server.
假设您需要创建和维护一组不同的数据源定义。
Suppose you need to create and maintain a separate set of data source definitions.
元数据与数据本身是分开来维护的。
数据库的维护不外乎变更二字。
销售机构开发了一个简单的数据库以维护顾客信息。
The sales organization developed a simple database to maintain customer information.
在维护窗口中，数据库实例会在特定时间段内被离线。
The database instance is taken offline for certain period of time within the maintenance window.
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