说明银行系统开发的要点，包括银行系统的开发与其它系统有何异同、银行系统开发的难点和重点、银行一般需要开发一些什么系统等。-The development of the main points of the banking system, including the development of the banking system and other systems What are the similarities and differences, difficulties and focus of the development of the banking system, bank general what systems need to be developed.