Recent advances in computing, communications, digital storage technologies, and high-throughput data-acquisitiontechnologies, make it possible to gather and store incredible volumes of data It creates unprecedented opportunities forlarge-scale knowledge discovery from database. Data mining is an emerging area of computational intelligence that offersnew theories, techniques, and tools for processing large volumes of data, such”data analysis, decision making, etc.There are many researchers working on designing efficient darn mining techniques, methods, and algorithms. Unfortunately, most data mining researchers pay much attention to technique problems for developing data mining models and methods,while little to basic issues of data mining. In this paper, we will propose a new understanding for data mining, that is, domain-oriented data-driven data mining (3DM) model. Some data-driven data mining algorithms developed in our Lab are also presented to show its validity.