未知题型 You are the administrator of a SQL Server 2000 computer. The server contains a database that is heavily indexed and that company users query extensively. The database has grown and query response time has slowed. The database is stored in a single data file.You want to accelerate query response time. What should you do?

未知题型 下述哪些项是信息系统逻辑模型中应该包括的内容?Ⅰ．系统总体结构Ⅱ．数据流程图Ⅲ．数据字典Ⅳ．E-R图Ⅴ．过程说明 模块结构图

单项选择题 HTML代码表示（）