In an embedded main memory database, the primary copy of the database is stored in a volatile memory when a crash occurs, a reload of the database from archive memory to main memory must be performed. 在嵌入式内存数据库系统中,系统崩溃时数据库主拷贝存于易失性内存中,因此需要把数据库主拷贝从外存重装到内存。