额外的数据源对象可以被创建成所需的类型。
这些方法连接到或打开必需的数据源对象，并检索所需的数据。
These methods connect to or open the necessary data source object and retrieve the required data.
在一个企业程序中，数据源对象是通过JNDI查找操作来获得的。
Typically, in an enterprise application data source objects are retrieved through a JNDI lookup operation.
这是一个逻辑名，在部署阶段可以绑定到一个JNDI数据源对象。
This is a logical name that can be bound to a JNDI datasource object during the deployment phase.
通过使用数据源对象，您可以访问一个连接数据源的连接池。
By using data source objects, you have access to a pool of connections to a data source.
连接池可提高性能，因为一将数据源对象实例化，它就会创建一个连接。
Connection pooling improves performance as a data source object creates a connection as soon as it is instantiate.
为了实现数据源对象，你需要创建一个遵守数据源协议的对象。
To implement a data source object, you must create an object that conforms to the UICollectionViewDataSource protocol.
但要记住，绑定到数据源对象的 DataGrid只能用于读取数据。
Remember, though, that a DataGrid can only bind to a data source object for the purpose of reading data.
数据源对象是和集合视图有关的最重要的对象同事你必须完成他。
The data source object is the most important object associated with the collection view and is one that you must provide.
你的数据源对象负责提供相关集合视图的单元格和增补视图的数据。
Your data source object is responsible for providing the cells and supplementary views used by its associated collection view.
在进行数据绑定时，如果数据源对象定义在控件命名空间之外时，WPF程序会崩溃。
WPF application crashes if the source object of a data binding in a control is an element that is defined outside the name scope of the control.
在安装IfxDataSource(第363行)之后，需要将多个设置指定到数据源对象。
After the installation of the IfxDataSource (line 363), several Settings need to be assigned to the data source object.
对于关系昵称，包装器确认数据源对象是否存在，如果定义了昵称，还将获取列定义和索引信息。
For relational nicknames, the wrapper validates the existence of the data source objects and retrieves the column definitions and index information, if any, when the nickname is defined.
否则，在数据源对象的UpdateCommand属性后创建和配置一个命令对象。
Otherwise, a command object is created and configured after the UpdateCommand property of the data source object.
由于连接池有许多优点，所以在Web应用程序中偏爱使用数据源对象的方法来处理数据库连接。
Because of the advantages of connection pooling, using data source objects is the preferred method of handling database connections in Web applications.
添加一个扩展点来实例化一个IBMDB 2Everyplace数据源对象，见清单1。
Add an extension point to instantiate an IBM DB2 Everyplace data source object as shown in listing 1.
当调用servlet时，对servlet的上下文中执行查找并返回匹配该名称的数据源对象。
When the servlet is invoked, a lookup is performed against the servlet's context and the datasource object that matches the name is returned.
当servlet或其他客户机需要使用连接时，它就通过JNDI服务器中的名称查找数据源对象。
When a servlet or other client wants to use a connection, it looks up a data source object by name from a JNDI server.
装饰视图是完全受控于布局对象的诗句装饰，和你的数据源对象里面的任何数据都没有关系。
Decoration views are visual adornments that are wholly owned by the layout object and are not tied to any data in your data source object.
GridView也公开一个RowUpdating事件，允许您修改正在传递到数据源对象的值。
The GridView also exposes a RowUpdating event that allows you to modify the values being passed to the data source object.
单个数据源对象可以创建一个或多个会话对象，每个会话对象都可以在给定时间位于事务范围内或范围外。
A single data source object can create one or more session objects, each of which can be inside or outside the scope of a transaction at a given time.
在注册一个关系数据源上的一个数据源对象时，默认的类型映射决定如何将一个数据源数据类型映射到每个列的DB 2类型。
During the registration of a data source object on a relational data source, default type mappings determine how a data source data type should map to a DB2 type for each column.
您只需建立一个数据源对象，提供连接字符串和查询文本，为GridView的DataSourceId属性分配数据源id。
You set up a data source object, provide the connection string and query text, and assign the id of the data source to the DataSourceId property of the GridView.
SQLJ应用程序连接到数据源对象为 ds 的数据库，并使用已定位的迭代器ByPos从现有的Employee表中获取行。
This SQLJ application connects to a database with data source object ds and fetches the rows from existing table Employee with positioned iterator ByPos.
该向导(如图2所示)允许您选择要使用的连接和要包含在数据源中的数据对象。
This wizard (as shown in Figure 2) allows you to select the connection to work with and the data objects to be included in the data source.
此外，数据图可以包含表示不同数据源中数据的对象。
Furthermore, a data graph can include objects representing data from different data sources.
使用数据访问对象来抽象和封装对数据源的所有访问。
Use a Data Access Object (DAO) to abstract and encapsulate all access to the data source.
了解不同数据源上对象的位置。
Knows about the location of objects on different data sources.
了解不同数据源上对象的位置。
Knows about the location of objects on different data sources.
应用推荐