Client applications query a data mediator service to obtain data.
客户应用程序向数据仲裁服务查询以获得数据。
A connection wrapper is required by the JDBC data mediator service.
JDBC数据中介服务需要一个连接包装器。
Client applications query a data mediator service and get a data graph in response.
客户机应用程序将查询数据中介服务，并从响应中得到数据图。
As mentioned earlier, we'll focus most closely on the JDBC data mediator service provided with WebSphere Studio.
正如前面提到的，我们将主要集中讲述与WebSphere Studio一起提供的JDBC数据中介服务。
However, at least one column of any table or view must be identified to the JDBC data mediator service as the "primary key."
不过，在任何表或视图中，至少有一列要作为“主键”标识给JDBC数据中介服务。
Client applications send an updated data graph to a data mediator service to have the updates applied to the original data source.
客户机应用程序随后将更新后的数据图发送给数据中介服务，以将更新应用到原始数据源。
By now, you should be fairly comfortable with the JDBC data Mediator Service metadata and how it is used to shape the resulting SDO data graph.
至此，您应该对JDBC数据中介服务元数据了然于胸了，并且清楚地知道如何使用这种元数据来形成结果SDO数据图。
The JDBC data mediator service generates the appropriate SQL statements (SELECT, INSERT, UPDATE, and DELETE) to access the target data source.
JDBC数据中介服务生成适当的sql语句(SELECT、INSERT、UPDATE和DELETE)来访问目标数据源。
However, most of the test scenarios have a broader scope, focusing on the entire sequence of operations needed to generate SDOs using the JDBC Data Mediator Service.
但是，大部分测试方案都有更宽的范围，重点在于使用JDBC数据中介服务生成SDO所需的整个操作序列。
However, when working directly with the early version of SDO and its JDBC data mediator service, as you are doing here, you need to define and populate this object yourself.
不过，当直接使用SDO的早期版本及其JDBC数据中介服务时(如此处所做的)，需要您自己定义和填充此对象。
These technologies are not the best architectural choice for every application, so take care when making the decision to use SDOs and the JDBC Data Mediator Service in your application.
这些技术不是每个应用程序的最佳体系结构，所以在决定何时将SDO和JDBC数据中介服务用于应用程序时一定要慎重。
SDO provides the ability to track changes to data objects using a ChangeSummary, and the JDBC Data Mediator Service allows the specification of an OCC column to manage data collisions on updates.
SDO提供了通过 ChangeSummary跟踪对数据对象的更改的能力，而JDBC 数据中介服务允许指定OCC列来管理更新中的数据冲突。
Thus far, we discussed how to write your JDBC Data Mediator Service code to perform some basic select queries and more advanced queries involving filters and multiple tables against a database.
到现在为止，我们讨论了如何编写JDBC数据中介服务代码来执行一些基本选择查询和更高级的查询（涉及过滤器和数据库中的多个表）。
The mediator layer is also defined as part of the Service Data Object (SDO) specification (see Resources).
中介器层也作为Service DataObject (SDO)规范的一部分进行了定义（请参见 参考资料）。
The mediator layer is also defined as part of the Service Data Object (SDO) specification (see Resources).
中介器层也作为Service DataObject (SDO)规范的一部分进行了定义（请参见 参考资料）。
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