As one of the three key bases for the alteration of management decision-making,the establishment and perfection of the mechanism of data faultage between different information systems is also one of the important research content for intelligent decision support systems.With the advent of the Internet+,all kinds of data resources are growing,the data faultage has become more obvious in several areas around our life.For further studies and practices on data faultage intellectual systems,taking the micro data faultage as a main analysis object,the dominant data faultage was defined as the data faultage between different information systems,and the tacit data faultage was defined as the data faultage existing in a single information system.In the dominant data faultage,the concept of pore was introduced as the data object with subject independence,and a data compaction technique was used to reduce the faultage property of pore.In the tacit data faultage,the data density was defined as the distribution of data objects,and a data pressure solution technique was used to reduce the space occupied by data objects.In the paper,the log data of mobile client application of "Shanghai Music Radio FM 101.7" was taken as an example and the dominant data faultage and the tacit data faultage were analyzed finely.