miniSQL buffer manager 以block (4k)为基础的从disk到main memory的buffer，CPP，全自动的，高度封装，无需其他模块帮助，即已经实现dirty，LRU 替换等功能-miniSQL buffer manager based on blocks which is 4k size, in cpp, high ziped, need no assistance from other module to implement the LRU replacem

根据进程的句柄获得该进程占用的内存，获得的值与在任务管理器中显示的内存（专用工作集）相同。-Based on the process handle to get the memory used by the process, the values obtained and displayed in the Task Manager memory (private working set).