A bank provides several kinds of accounts, among them checking accounts and saving accounts. Design a simple banking system data model that represents these accounts. Be sure to make use of abstract...

A bank provides several kinds of accounts, among them checking accounts and saving accounts. Design a simple banking system data model that represents these accounts. Be sure to make use of abstract classes, inheritance, polymorphism, and encapsulation. The result of your work should be a set of class summary boxes for the data model of the banking system.