[单选] You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. You are going to use the data collector to gather performance data periodically on all instances. You must store all collected data in the same database. This database is hosted on a single instance. Every five hours, you have to collect and load performance data in the management data warehouse. Which data collection process should you implement? （）

A . You should create a cached data collection
B . You should create an on-demand non-cached data collection
C . You should create a scheduled non-cached data collection.
D . You should create two different SQL Agent jobs. The two jobs are scheduled at the same time. One job uploads the data collection and the other job creates a data collection.

中层数据流程图是对顶层数据流程图的分解，分解的原则是以（）为划分标准。下面（）实例可以通过层的应用来实现。创建网页上的动画。制作各种动态导航效果。生成丰富的动态按钮。交互游戏。关于Ⅰ型和Ⅱ型内含子自我剪接说法正确的是（）两者反应都需要鸟苷的参与。 Ⅰ型进攻的基团是内部腺苷的2’-OH。 Ⅰ型进攻的基团是带有3’-OH的鸟苷。都是依赖与金属离子的参与。 Ⅱ型内含子的二级结构含有一个6个螺旋构成6个结。骈赋以下应用属于利用表单功能设计的有（）用户注册。浏览数据库记录。网上订购。用户登录。 You work in a company which is named Wiikigo Corp. The company uses SQL Server 2008. You are the administrator of the company database. Now you are in charge of a SQL Server 2008 instance. You are going to use the data collector to gather performance data periodically on all instances. You must store all collected data in the same database. This database is hosted on a single instance. Every five hours, you have to collect and load performance data in the management data warehouse. Which data collection process should you implement? （）

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