If you haven't already done so, open the data perspective, establish a database connection, and create a data project.

如果已经这样做了，就打开Data透视图，建立一个数据库连接，并创建一个Data项目。

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It will create a new database in the c: \ Temp \ Demo \ data directory and establish a connection.

它将在C： \ Temp \ Demo \ NewDatabase目录中创建新的数据库，并建立连接。

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While it is true that an application programmer can always establish a separate connection to each individual data source, it is much easier to have a single database connection in the application.

虽然应用程序编程人员总能一一建立到各个数据源的连接，但更容易的方式还是在应用程序中只使用一个数据库连接。

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