【单选题】存储管理器是数据库管理系统非常重要的组成部分。下列关于存储管理器的说法,错误的是______。 A) 存储管理器负责检查用户是否具有数据访问权限 B) 为了提高数据访问效率,存储管理器会将部分内存用于数据缓冲,同时使用一定的算法对内存缓冲区中的数据块进行定期置换 C) 存储管理器会为编译好的查询语句生成执行计划,并根据执行计划访问相关数据 D) 存储管理器以事务方式管理用户对数据的访问,以确保数据...
【简答题】Chinese Tea Ceremony 1. One of the first written accounts about tea ceremonies dates back to the Tang Dynasty, when the serving of tea was named chadao or “the way of tea.” The Chinese tea cerem...
【判断题】Chinese tea ceremony 1. One of the first written accounts about tea ceremonies dates back to the Tang Dynasty, when the serving of tea was named chadao or “the way of tea.” The Chinese tea ceremony wa...
【判断题】In accordance with the Chinese Law, a driver who is guilty of drunk driving shall pay a 1000 yuan fine and the license will be suspended for six months besides 12 points in his or her record.
【简答题】Please Translate the following passage into Chinese A New Nation At the beginning of the 20th century, Australia was an open and democratic "new world" society. In the absence of a strongly defined ar...