Some times we overlook the basics. And from time to time it is good to ask and answer the basic questions. One of the most basic questions for us is to ask, "What is Data Integration?"Â After asking, we need to provide an answer.

Data Integration is the process of transforming heterogeneous data into a useful homogeneous data set.

All of the techniques and disciplines that we use as integration engineer help us to transform (not must map) heterogeneous data (data in more than one form, source, type, etc)Â into a useful (not common, and not necessarily the final) homogeneous (single form, schema, location, etc) data set.