ETL has been a huge burden for any IT organization to implement any fairly sized data warehouse applications. The key part of ETL or ELT however is to know the data. That is achieved through data analysis. There are many ETL developers, but there are only a few who are capable of efficiently doing insightful data analysis. That is why many data warehouse project dragged months or years.
Data profiling is the very first step of data science. It is also the very first step of business intelligence. Here we are going to explore the old field with some new technology.