This document discusses data mining and its applications. It begins by defining data mining as the process of discovering patterns in large amounts of data through techniques from artificial intelligence, machine learning, statistics, and databases. The overall goal is to extract useful information from data. It then describes common data mining tasks like classification, clustering, association rule learning, and regression. Examples of data mining applications given include using it in healthcare to improve patient outcomes and reduce costs, and in education to help institutions better understand and support their students.