Data mining is to analyze the data sets to summarize their main characteristics and to gather significant patterns and trends. Data mining is used for extracting useful information from large databases the can assist in making efficient business decisions. Data mining is used in marketing for doing market segmentation, understanding customer behavior, and target with personalized loyalty campaigns. Data Mining is also used in the retail industry for finding the most valuable customers and increasing sales at the checkout queue. It is used in banking for fraud detection and risk analysis. It is also used in healthcare for making more accurate diagnostics.
If you are looking for an online course to learn Data Science, then check out this Data Science Certification program by Intellipaat.
Also, watch this video on Data Science for beginners to understand more: