当然他也可以是其他的系统,(遗留系统,大型主机),可以是服务(B2B服务,信用卡局服务)或者是像LDAP这样的数据库等.
A data source can also be another system (legacy/mainframe), service (B2B service or credit card bureau), or some kind of repository (LDAP).
这意味着，如果监听器逻辑更改一个外部数据源(数据库、大型机等)中的任意状态，那么这些交互必须通过一个“至少一次”交付范式处理。
This means that if the listener logic changes any state in an external data source (database, mainframe, and so on) then these interactions must be treated with an "at least once" delivery paradigm.
最佳性能环境是能够同时在中间层WebSphereApplicationServer和后端（如数据库、大型机等）复制生产的环境。
The best performance environment is one that replicates production both in the middle tier WebSphere Application Server, and in the backend (such as databases, mainframes, and so on).
例如，一个应用程序可能既要访问来自中间层的Oracle数据库，又要通过中间件(如MQSeries)访问CICS、IMS等大型主机系统。
For instance, a program may use data in both a middle-tier Oracle database and a mainframe CICS or IMS system accessible through middleware such as MQSeries.
另外，在现有的诸多领域，如数据挖掘、大型数据库和互联网信息处理等，其数据都是动态的。
In addition, the data is dynamic in a good many existing areas, such as data mining, large database and Internet information processing, etc.
冶金、石化等行业已对企业的重要关键设备安装了在线或离线监测系统，随之形成了大型的数据库。
Enterprises in metallurgy and petrified industry have installed the on-line and off-line monitoring systems for their significant equipments, and large databases appear incidentally.
在大型企业应用系统的实施过程中，经常需要根据用户的需求进行数据库结构的更改，如增加一些数据项等。
During the implement of database application, database structure is often modified according to the enterprise user's ne-eds. The requirement can be solved by dynamic user interface design method.
在大型企业应用系统的实施过程中，经常需要根据用户的需求进行数据库结构的更改，如增加一些数据项等。
During the implement of database application, database structure is often modified according to the enterprise user's ne-eds. The requirement can be solved by dynamic user interface design method.
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