When an EJB component wants to access a database, a message queue server, or some other transactional resource, it acquires a connection to the resource manager (usually by using JNDI).
当一个EJB组件想访问数据库、消息队列服务器或者其它一些事务性资源时，它需要到资源管理器的连接(通常是使用JNDI)。
If a user is not permitted to access a database that contains a component, allowing the user to access a page with that component does not give him or her access to that database.
如果不允许用户访问包含组件的数据库，那么可以允许他访问含有该组件的页面，但同时又不能访问数据库。
When a component such as a resource adapter on WebSphere Process Server needs database access, it uses a server data source.
当WebSphereProcessServer上的组件（如资源适配器）需要访问数据库时，它将使用服务器数据源。
There are a number of issues to consider when it comes to packaging a Zero component for reuse by other developers, and database access is the cause of many of them.
若要包装Zero组件以供其他开发人员重用，需要考虑的事情很多，而其中大多数问题都是由数据库访问引起的。
Several key techniques based on J2EE, including the component development, database access, load balance and multithreading, is discussed for building a distributed and dynamic application system.
文中讨论了J2EE在组件开发、数据库访问、负载平衡与多线程等多项关键技术在建立分布、动态、实际问题的应用。
According to low efficiency in network database accessing in unreliable military communication system, this paper proposes the database access model based on distributed component.
针对不可靠军事通信应用系统中网络数据库访问效率低的问题，提出一种基于分布式组件的数据库访问模型。
According to the requirement of J2EE system structure, corresponding EJB component was established to access database and handle operation logic.
按照J2EE体系结构要求，以建立相应EJ b组件实现数据库访问逻辑和业务逻辑。
According to the requirement of J2EE system structure, corresponding EJB component was established to access database and handle operation logic.
按照J2EE体系结构要求，以建立相应EJ b组件实现数据库访问逻辑和业务逻辑。
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