熟悉数据库和SEM的进来回答一下这两道问题吧？

我室友Facebook面试时遇到的两道题，他回来后把它整理了一下，题目是英文的，可以用中文回答，随便谈谈你们的感想，让我对这些知识也有一定的把握，谢谢～

1.Design the schema for an SEO datamart to be used for analyzing how search engines contribute to user acquisition and engagement on Facebook.

2.Assuming you had access to all internal data at Facebook, how would you predict revenue over the next 12 months from Facebook’s self-service advertising product. Assume historical data includes non-uniform top-line user and revenue growth.