安装SQL Server时，系统自动建立几个数据库，其中有一个数据库被删除后，不影响系统的正常运行，这个数据库是（）。

A:master数据库 B:model数据库 C:tempdb数据库 D:pubs数据库

安装MS SQL Server时，系统自动建立几个数据库，其中有一个数据库被删除后，不影响系统的正常运行，这个数据库是（）。

A:master数据库 B:model数据库 C:tempdb数据库 D:pubs数据库

下列哪一个数据库不是SQL Server 2000的系统数据库（）

A:master数据库 B:msdb数据库 C:pubs数据库 D:model数据库

SQL Server2005的系统数据库中最要的是（）数据库。

A:Master数据库 B:Model数据库 C:msdb数据库 D:Tempdb数据库

如果希望所有新创建的数据库自动具有某些对象或授权，可以将这些对象和授权事先放在（）。

A:master数据库 B:tempdb数据库 C:model数据库 D:msdb数据库

System analysis is traditionally done top-down using structured analysis based on （） ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are （） ．There are two substages of object-oriented analysis． （） focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the （） of the real-world system and organizes it into workable pieces． （） addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

A:function model，class model and state model B:class model，interaction model and state model C:class model，interaction model and sequence model D:function model，interaction model and state model

System analysis is traditionally done top-down using structured analysis based on （）. Object-oriented analysis focuses on creation of models. The three types of the analysis model are （）. There are two substages of object-oriented analysis.（）focuses on real-world things whose semantics the application captures. The object constructed in the requirement analysis shows the （） of the real-world system and organizes it into workable pieces.（） addresses the computer aspects of the application that are visible to users. The objects are those which can be expected to vary from time to time quite rapidly.

A:function model, class model and state model B:class model, interaction model and state model C:class model, interaction model and sequence model D:function model, interaction model and state model

在SQL Server 2008中，有系统数据库master、model、msdb、tempdb和用户数据库。下列关于系统数据库和用户数据库的备份策略，最合理的是

A:对以上系统数据库和用户数据库都实行周期性备份 B:对以上系统数据库和用户数据库都实行修改之后即备份 C:对以上系统数据库实行修改之后即备份，对用户数据库实行周期性备份 D:对master、model、msdb实行修改之后即备份，对用户数据库实行周期性备份，对tempdb不备份

In database technology, Object—Oriented Model belongs to ( )。

A:conceptual data model B:structure data model C:physical data model D:visual data model