The document provides guidance on designing marketing databases to support advanced analytics and predictive modeling. It emphasizes the importance of cleaning and summarizing raw data into descriptive variables matched to the level that needs to be ranked, such as individuals or households. Transaction and customer history data should be converted into summary descriptors like recency, frequency, and monetary variables. This prepares the data for predictive modeling to increase targeting accuracy, reduce costs, and reveal patterns. Consistency in data preparation is highlighted as key for modeling effectiveness.