This paper describes database application model and its service for drug discovery introducing our proposed software development process in MDA into our research process. The issue of veracity can be solved when pinpoint data are selected from drug properties in big data analytics with domain model. The datasets of pinpoint data are designed to predict side effect and its incidence even if some of pinpoint data are missing. The proposed prediction model of side effect and its incidence can attain almost 100 % accuracy in its performance. In addition to our first research goal of side effect prediction in drug discovery, we can discover 2 new services for drug discovery by new uses for old drugs in logical system model with big data analytics. The veracity can be strengthened based on the number of disease gene directly interacted to chemicals (drugs) and the number of the disease gene and SNPs contributing to human disease. So far, it can be concluded that the reputation of data modeling with data analytics and implementation can strengthen the “veracity” of big data.