当MySQL必须要进行排序时，就会在从磁盘上读取数据时分配一个排序缓冲区来存放这些数据行。
When MySQL must perform a sort, it allocates a sort buffer to store the rows as they're read from disk.
当然，但是您将很快看见，在2.4.4，字节缓冲区对象拥有一大堆方便的方法，作为别的基本数据类型用来获取和存放缓冲区内容。
Sure, but as you'll soon see in Section 2.4.4, ByteBuffer objects possess a host of convenience methods for getting and putting the buffer content as other primitive data types.
数据库也会为服务器进程分配私有的内存空间，这块空间叫做PGA(程序全局区)，那里存放着私有的进程和会话信息。
It will also allocate a private memory area called PGA, where it stores what is private to the process and to the session.
磁鼓中用来暂时存放数据的一种缓冲区。
在通信程序中，经常使用环形缓冲区作为数据结构来存放通信中发送和接收的数据。
In the communications program, frequently used as a ring buffer data structure to store communications to send and receive data.
在通信程序中，经常使用环形缓冲区作为数据结构来存放通信中发送和接收的数据。
In the communications program, frequently used as a ring buffer data structure to store communications to send and receive data.
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