What is knowledge discovery in databases (KDD)?  Review section 1.2 and review t

What is knowledge discovery in databases (KDD)? 
Review section 1.2 and review the various motivating challenges.  Select one and note what it is and why it is a challenge.Challenges are as follows
i.Non-tarditional Analysis, ii.data ownership and distribution, iii.heterogeneous and complex data, iv.scalability, v.high dimesionality
3.Note how data mining integrates with the components of statistics and AL, ML, and Pattern Recognition.
4.Note the difference between predictive and descriptive tasks and the importance of each.