After _______________ came to power in Germany, he invaded and annexed Poland. No one thought that Hitler would actually invade Poland. Because Poland had a treaty with the United Kingdom, England found itself at war with Germany.
【单选题】在SQL Server 2000中,是一个非常重要的系统数据库,如果损坏将会对系统造成严重后果,因此系统管理员应该对进行备份。SQL Server 2000对数据库提供的备份有: Ⅰ.完全备份Ⅱ.差异备份Ⅲ.日志备份 以上备份方法中能够应用在数据库上的是______。 A) 仅Ⅰ B) 仅Ⅰ和Ⅱ C) 仅Ⅰ和Ⅲ D) 全部