要连接的数据库必须在本地DB2(客户机)实例中编目。
The database you want to connect to must be cataloged in the local DB2 (client) instance.
延迟抓取的另一个问题就是在获取到请求的数据前要一直打开数据库连接，否则应用就会抛出一个延迟加载异常。
Another issue with lazy fetching is that the database connection has to be retained until all the required data is fetched else the application will throw a lazy loading exception.
对于要访问的每个数据库，只需设置一次连接。
Setting up the connection has only to be done once for each database you want to access.
如果您使用本指南作为学校课程的一部分，那么可以向老师询问要连接到的数据库的名称。
Find out from your instructor the database name that you will need to be connected to.
要建立数据库连接，可以选择DBname,userID,password,DB2UniversalDatabase 8.1，然后接受剩余选项的所有缺省值。
To establish a database connection, select DB name, userID, password, DB2 Universal Database 8.1, and take all defaults for the remaining options.
要更改此连接，您可以使用setconnection命令，后接showconnections显示的数据库名称。
To change connections, you use the set connection command followed by the name of the database as shown by show connections.
要设置缺省数据库连接，请选择SQLDatabaseConnections并检查如图4所示的选择。
To set the default data base connection, select SQL Database Connections and check the selections as shown in Figure 4.
当重新连接到数据库时，前一个连接中的最后一个要放置数据的日志文件将被截断，使它的大小等于文件中数据的大小。
Upon reconnecting to the database, the last log file to have data placed in it from the previous connections will be truncated to the size of the data in the file.
要连接到数据库，服务器端代码需要执行一些基本的创建、更新、删除和—最重要的—读取记录等操作。
To connect to the database, the server-side code needs to do some basic creating, updating, deleting, and - most importantly - reading of records.
要进行连接，您需要知道您数据库的用户名、密码和端点url。
To connect, you need to know your database's user name, password, and endpoint URL.
在DB 2中，在发出与数据库相关的命令之前，总是要连接到数据库。因此，在这种架构下，对象名称不需要包括数据库名称。
In DB2 you always connect to a database before issuing database specific commands; therefore, under this architecture, object names need not include the database name.
要取得领先的SAP性能，必须有突出的可伸缩性，并且在复杂的应用程序逻辑与数据库之间要有紧密的连接。
To deliver leading SAP performance requires outstanding scalability, as well as a tight linkage between complex application logic and the database.
在多分区数据库中，要挂起任何非编目分区上的I/O，都必须有到编目节点的连接，以便进行认证。
In a multi-partitioned database, an attempt to suspend I/O on any of the non-catalog partitions will require a connection to the catalog node for authorization.
要创建到数据库的JDBC连接，以便我们可以使用它，请执行以下命令。
To create the JDBC connection to the database so that we can work with it, execute this command.
映射工具如果要使用来自我们数据库的信息，就必须能够连接到该数据库，所以要创建一个具有以下信息的新数据库连接。
For the mapping tool to use information from our database, it needs to be able to connect to that database, so create a new database connection with the following information.
要连接到该数据库，可以将SQLLoginModule配置为直接使用JDBC，或者使用CommunityEdition中的连接池。
To connect to the database, the SQLLoginModule can be configured to either use JDBC directly, or use the connection pools in Community Edition.
如果ij测试成功了，那么就可以运行要连接到Derby数据库的perl脚本。
If the ij test succeeded, you are ready to run the perl script which connects to the Derby database.
脚本中的第一个实际命令是Derbyconnect 命令，它告诉ij工具连接test数据库，必要的话要先创建数据库。
The first actual command in the script is the Derby connect command, which tells the ij tool to connect to the test database, first creating it if necessary.
没有关联的连接这一事实告诉pureQuery要查询内存中的数据，而不是存储在数据库中的数据。
The fact that there is no associated connection tells pureQuery that you are querying in-memory data and not data stored in a database.
此类负责管理数据库连接，包括建立初始连接和创建演示应用程序要访问的ProductDAO实例。
This class is responsible for managing the database connection, which includes establishing the initial connection and creating a ProductDAO instance for the demo application to access.
通常，数据库连接的数量要小于servlet线程池中可用线程的数量。
Often, the number of database connections is smaller than the number of threads available in the servlet thread pool.
要创建到Informix的JDBC连接，需要一个URL来确定目标数据库，并提供合适的用户凭据；例如。
To create a JDBC connection to Informix, you will need a URL to identify the the target database and supply the appropriate user credentials; for example.
要确保FAP服务可以连接到FAP数据库，添加数据库的连接属性到FAPService . Properties文件。
To ensure that the FAP service can connect to the FAP database, add the connection properties for the database to the FAPService.Properties file.
在DataSourceExplorer视图中创建的连接包含要操作的数据库的基本连接信息。
The connections you create in the Data Source Explorer view contain basic connectivity information to the database where you intend to perform work.
特别是，要避免没有缓冲的、生命期短的数据库连接。
Specifically, avoid non-pooled short-lived database connections.
要建立一个缓存的连接（如果您更熟悉传统的数据库扩展的话，也可以说是 *pconnect()），需要在实例化数据库连接时传递一个属性
To establish a cached connection (or *pconnect() if you're more familiar with the traditional database extensions), you pass in an attribute when you instantiate your database connection
选择分析和迁移s QL数据库，然后点击下一步。接着，就会有一个窗口弹出来，干神马呢，问你要源数据库的数据库连接信息以便等会实施迁移。
Select the Analyze and Migrate SQL database and click next. After this, a dialog appears and asks for the connection data to the source database for the migration.
数据库编程要解决的首要问题是如何快速、便捷地实现与数据库的连接，从而实现数据交换的目的。
The first task in database programming is to establish a database connection rapidly and easily to realize the goal of data exchange.
数据库中多个实体呈树形关联时，对海量数据作多层实体连接运算时要消耗系统大量的内存资源。
Vast memory resource is consumed when great capacity data is retrieved while many layers of entities in a database are re - lated like a tree and join operation is carried out.
数据库中多个实体呈树形关联时，对海量数据作多层实体连接运算时要消耗系统大量的内存资源。
Vast memory resource is consumed when great capacity data is retrieved while many layers of entities in a database are re - lated like a tree and join operation is carried out.
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