缺省情况下支持进程内通讯、IPC、广播和TCP。此外，协议间切换非常简单，仅需更改连接字符串的前缀即可。
By default, there is support for in-process, IPC, multicast, and TCP, and switching between all of them is as simple as changing the prefix on your connection string.
Borland Data Provider中提供了一组组件(其前缀为Bdp)，它们可以连接到任何支持的数据库上，可以只通过修改连接字符串来实现连接的切换。
The Borland data Provider comes with one set of components (with the Bdp prefix) that can connect to any of the supported databases, and can switch just by changing the connection string.
您看到了引用主目录的不同方法，了解了鲜为人知的cd转移特性，该特性允许替换当前路径中的字符串并切换到新路径。
You saw different ways of referring to home directories, and you learned about the little-known CD shuffle, which allows you to substitute a string in your current path and switch to a new path.
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