Over last 2 decade data mining practices have actively employed in various fields. Input data for such indiscriminate applications not only varies but is also complex i.e. large as well as diversified in nature Many data mining applications are limited to mining only a certain type of data. Moreover, these applications use solitary technique of data mining to discover knowledge. They provide business intelligence in all aspects. That kind of information can produce the actionable knowledge. Recently data mining has got tremendous usage in the real world combined mining which is one of the novel approaches to mining complex data.