Big data concern large-volume, complex, growing Datasets with multiple, autonomous sources. With the quick development of networking, data storage and also the data assortment capability, data mining square measure currently chop-chop increasing all told science and engineering domains, as well as physical, biological and medicine sciences. This paper presents a HACE theorem that characterizes the options of the massive data revolution and proposes a giant processing model, from the information mining perspective. This data-driven model involves demand-driven aggregation of Data sources, mining and analysis, user interest modelling and security and privacy issues.