【单选题】【消耗次数:1】
用于数据库恢复的重要文件是( )。
数据库文件
索引文件
日志文件
备注文件
参考答案:
复制
纠错
相关题目
【单选题】 SQL Server 2008的数据库文件包括主数据文件、辅助数据文件和( )。
①  索引文件
②  日志文件
③  备份文件
④  程序文件
【单选题】 关于数据库文件,下面的说法错误的是( ).
①  数据库文件需要在某一数据库管理系统支持下建立
②  数据库文件是以一定的组织方式存储在一起的相关数据的集合
③  在结构固定时,记录的多少决定数据库文件的大小
④  多个用户不能同时访问数据库文件
【判断题】 日志文件的推荐扩展名为.ldf,用于存放恢复数据库的所有日志信息。每个数据库只能有一个日志文件。
①  正确
②  错误
【单选题】 数据库文件的逻辑结构形式是( )。
①  流式文件
②  档案文件
③  记录式文件
④  只读文件
【单选题】 数据库文件的逻辑结构形式是()。
①  流式文件
②  档案文件
③  记录式文件
④  只读文件
【单选题】 日志文件的主要作用是处理数据库的( )。
①  安全性
②  完整性
③  恢复
④  并发控制
【单选题】 在SQL Server中提供了四种数据库备份和恢复的方式,其中( )对数据库中的部分文件或文件组进行备份。
①  完全数据库备份
②  增量备份
③  事物日记备份
④  数据库文件或文件组备份
【单选题】 Visual FoxPro中,数据库文件的扩展名是
①  dbc
②  .dct
③  .dcx
④  A
【单选题】 一个关系数据库文件中的各条记录()
①  前后顺序不能任意颠倒,一定要按照输入的顺序排列
②  前后顺序可以任意颠倒,不影响数据库中数据的实际意义
③  前后顺序可以任意颠倒,但排列顺序不同,统计结果就可能不同
④  前后顺序不能任意颠倒,一定要按照关键字段值的顺序排列
【单选题】 在Visual FoxPro中,数据库文件的扩展名为
①  .dbc
②  .dct
③  .dcx
④  .dbf
随机题目
【单选题】 They _ on the programme for almost one week before I joined them, and now we on it as no good results have come out so far.
①  had been working; are still working
②  had worked; were still working
③  have worked; were still working
④  have worked; are still working
【单选题】 Many people who had seen the film were afraid to go to the forest when they remembered the scenes ___ people were eaten by the tiger.
①  that
②  by which
③  which
④  in which
【单选题】 A candidate for the democratic presidential nomination ______ at this moment.
①  is interviewing
②  being interviewed D. Interviewing
③  is being interviewed
④  Interviewing
【单选题】 ___ is often the case, we have worked out the production plan.
①  Which
②  When
③  What
④  As
【单选题】 There are many people ___ only on-line activity is sending and receiving e-mails.
①  who
②  that
③  which
④  whose
【单选题】 On his 10th birthday,Marty manages to escape from the zoo and gets onto the subway, ___ he believes that he can go to the wild.
①  which
②  from what
③  through which
④  that
【单选题】 He ___________ his friends for their help at the hotel now.
①  entertained
②  was entertaining
③  is entertained
④  is entertaining
【单选题】 ___ is reported in the newspaper, talks between the two countries are making progress.
①  It
②  As
③  That
④  What
【单选题】 They are living with their parents for the moment because their own house __________.
①  is being rebuilt
②  has been rebuilt
③  is rebuilt
④  has rebuilt
【单选题】 在下列核算组织程序中,被称为最基本的会计核算组织程序的是( )
①  记账凭证核算组织程序
②  汇总记账凭证核算组织程序
③  科目汇总表核算组织程序
④  日记总账核算组织程序