You are a network administrator for your company. The network contains four Windows Server 2003 computers configured as a four-node server cluster. Each cluster node is the preferred owner of a clustered instance of Microsoft SQL Server 2000, and each cluster node is configured as a possible owner of all other instances of SQL Server. All nodes have identically configured hardware. All four nodes operate at a sustained 70 percent CPU average. You add a server that has identically configured hardware to the cluster as a fifth node. You want each SQL Server instance to continue operating at the same level of performance in the event of a single node failure. What should you do? () 正确。 错误。
血浆渗透压由()和()两部分构成。 正确。 错误。
由概念设计进入逻辑设计时,原来的1对1或1对多联系通常都需要被转换为对应的基本表。 正确。 错误。
公务卡的操作可以概括为()。 正确。 错误。
在对象数据模型中,对象既不能够继承,也不能够嵌套。 正确。 错误。
概念设计也要贯彻概念单一化原则,即一个实体中的所有属性都是直接用来描述码的。