Today core banking has become the major part of financial system. Presently, to fulfill the basic financial needs, the customer open different account numbers in different banks, financial institutions, Provident funds, Mutual funds, Insurances, etc. for various transactions. The major drawback of this system is that, there is no unique identification code of a customer to maintain various transactions and different accounts detail in different branches of different banks and financial institutions. In this paper, we have tried to focus to remove the above drawback by introducing the 7-tier architecture to maintain the Bank unique identification code (BUID code). Here the 7-tier architecture model is designed with the seven layers with the use of biometric tools and the data of customers are stored in Data Warehouse through data mart. This model will help in decision making process by using OLAP and OLTP tools. The main advantage of this model is that the 7-tier architecture model with BUID can easily blend with current finance system. Thus the 7-tier architectural model can become a robust to perform a role to enhance the present account opening process in financial system.

7-tier Architecture Bank Unique Identification (BUID) OLTP OLAP Bank Account Number (BAN)