压缩数据库的VC++源码。在平常做数据库相关编程的时候，数据库上有图片等格式的内容时，删除的话，数据库还是和没删除前的大小一样,需要对数据库进行压缩，才能把内容真正删除掉。-Compressed database in VC++ source code. Usually do database programming, databases, photographs, and other formats, deleted, the database is not deleted before th