Recent years have witnessed a vast growth in data and regularity requirements from the central banks, due to the latest financial crises, many financial institutions found that it might be an essential to change their information infrastructure to fulfill thus regularity requirements. Also, to increase their operational efficiency by implementing a decision support systems. This study will expose the readiness of the Core Banking Systems (CBS) implementing the data mining technique. If we will start our investigation about how and when can we implement the data mining technique, we do need...