当您将这种特性与将这些(任意复杂的)数据结构保存在二进制d BM文件中的能力结合在一起使用时，就可以开发出一个小型的数据库系统。
When you combine this feature with the ability to store these (arbitrarily complex) structures in a binary DBM file, you can develop what amounts to a tiny database system.
想一下，当Linux想在一个带4096字节扇区的新磁盘上读写这些数据结构时，会发生什么事情。
Consider what happens when Linux wants to read or write one of these data structures on a new disk with 4096-byte sectors.
当设置好这些数据结构，代码段以及系统寄存器之后，可以通过设置控制寄存器CR0的PE位(第0位)为1来进入保护模式。
With these data structures, code modules, and system registers initialized, the processor can be switched to protected mode by loading control register CR0 with a value that sets the PE flag (bit 0).
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