Why is the CRISP$-$DM methodology unique, compared to other data science methodologies? The CRISP$-$DM methodology is iterative, meaning that its phases can be repeated. The CRISP$-$DM methodology uses data mining methods that are best suited for unstructured data.The CRISP$-$DM methodology begins with a business understanding phase to understand the project objective from a business perspective and define the data problem to solve.