（）指将数据集中并可以减少重复，有效率地提供多方面应用的数据组织方式。
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. There is a database which is named Sellings in the instance. The Sellings database contains a table named Productions. The table is used to stores information about all types of products. The Productions table is often queried by users on the basis of the RadioSize column. The RadioSize column contains the NULL value for all products other than Radios. Currently no index exists on the RadionSize column. According to the requirement of the company CIO, you have to optimize the query performance and reduce the effect on the disk space to the least. So what action should you perform to achieve this goal?（） ["On the Products table, you should create a view. ","On the RadioSize column, you should create a clustered index ","On the RadioSize column, you should create a filtered index ","On the RadioSize column, you should create a unique clustered index"]
下列做法中符合婴儿三浴锻炼原则的是（）。 ["开始户外活动时，选择适宜天气，室内外温差应该显著","开始时刺激强一些、时间长一些，慢慢减缓","三浴锻炼与日常生活制度相结合","利用日光锻炼时，如果出汗过多、精神萎靡，应该继续坚持"]
新《安全生产法》于哪次会议通过，自何时起施行，共多少章多少条？
中华人民共和国国务院令第650号《医疗器械监督管理条例》于（）起施行。
人身保险公估人
