The data graph is then returned and processed by the calling client.
然后返回数据图并由调用客户机进行处理。
Some also require query capabilities to identify parts of the data graph.
有些应用程序还需要查询功能，以标识数据图表的某些部分。
A combination of the data objects in SDO is represented by the data graph.
在SDO中数据对象的组合由数据图表示。
SDO clients can traverse a data graph and read and modify its data objects.
SDO客户机可以遍历数据图，读取和修改数据图中的数据对象。
Object creations contain the data objects that were added to the data graph.
对象创建包含添加到数据图中的数据对象。
Once we've created the data objects, we need to attach them to the data graph.
一旦创建了数据对象，还需要将其连接到数据图中。
Object deletions contain the data objects that were deleted from the data graph.
对象删除包含从数据图中删除的数据对象。
A data graph is a collection of tree-structured or graph-structured data objects.
数据图是树形结构或图形结构的数据对象的集合。
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。
When retrieving data, mediators convert data from the repository into a data graph.
当检索数据时，中介器会将库中的数据转换为数据图。
The data graph represents the data being sent to, or retrieved from, the repository.
数据图表示要发送到库或从库检索的数据。
For this example, the data graph is made of Employee data objects (and a change summary).
在本例中，数据图由Employee数据对象(以及变更摘要)组成。
Furthermore, a data graph can include objects representing data from different data sources.
此外，数据图可以包含表示不同数据源中数据的对象。
Finally, it calls the DMS's update() method, passing the updated data graph for Terence Shorter.
最后调用DMS的update()方法，传递更新的Terence Shorter数据图。
The code snippets below give a quick overview of the ways of navigating the contact SDO data graph.
下面的代码片段简要概述了导航联系人sdo数据图表的方式。
A data graph is a collection of tree-structured objects that might be disconnected from the data source.
数据图就是一组可以从数据源中分离出来的树形结构的对象。
A quick description of the pseudo-metadata code and the resulting data graph structure is provided below.
下面将对伪元数据代码和结果数据图结构进行简要的介绍。
The dynamic model (the default) lets programmers get and set data elements in the data graph by name (String).
动态模型(缺省值)允许编程人员通过名称(字符串)获得和设置数据图中的数据元素。
Instead, it accesses an intermediary called a data access service (DAS) and receives a data graph in response.
它访问一个叫做数据访问服务(dataaccess service,DAS)的中介并接收响应中的数据图。
So far, you learned how to create metadata, then populate and access a data graph corresponding to the metadata.
到目前为止，您已经了解了如何创建元数据，然后填充和访问与元数据对应的数据图。
From the root of the data graph, obtained by invoking getRootObject(), you can navigate the structure using XPATH.
使用XPATH，可以从数据图形的根（通过调用 getRootObject() 获取）导航结构。
They are initially empty (when the data graph is returned to a client) and populated as the data graph is modified.
变更摘要最初是空的（数据图刚返回客户机的时候），随着数据图的变化逐渐填充。
Another important concept in the SDO architecture is the data graph, a structure that encapsulates a set of data objects.
SDO体系结构中的另一个重要概念是数据图，它是封装一组数据对象的结构。
SDO also provides a metadata API, which allows applications, tools, and frameworks to introspect the data model for a data graph.
SDO还提供了一个元数据api，允许应用程序、工具和框架对数据图形的数据模型进行自检。
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。
What if another application had accessed the database and changed values after our example application had obtained its data graph?
如果在我们的示例应用程序已经获得数据图之后，另外一个应用程序访问数据库并更改了值会怎么样？
This simple example loads data from an XML file into an SDO data graph, prints and updates the data, then writes it back to a file.
这个简单的例子将数据从XML文件加载到SDO数据图，打印并更新数据，然后将它写回文件。
Upon persisting changes to the repository, mediators process changes within the data graph and send those changes to the repository.
将更改保存到库时，中介器先在数据图中处理更改，然后将这些更改发送到库。
If you're familiar with XML or Web services, you can think of the data graph model as the XML Schema (XSD) that defines your data objects.
如果熟悉XML或者Web服务，那么可以将数据图模型看作定义数据对象XMLSchema (XSD)。
Change summaries are contained by data graphs and are used to represent the changes that have been made to a data graph returned by the DMS.
变更摘要包含在数据图中，表示对DMS返回的数据图的修改。
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