Identify the data required and the information holders.
识别数据需求和信息持有者。
There are some Websites that are simply information holders for the site's owner.
有一些网站只是简单地列出网站所有者的相关信息。
As recently as 2005, research by JD Power, the marketing information company, found that US buyers cared more about the number of cup holders in a new vehicle than its miles-to-gallon ratio.
最近在2005年,营销信息公司JD电力的研究发现,美国买家更关心新车型的杯架个数,而非每加仑汽油的里程数比例。
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