Core Banking System modernization for Japanese Bank

仕事の合間に書きました。IBMメインフレームでの銀行勘定系モダナイゼーションについて書いてみました。
いつまでもSAIL/ESAというわけにはいかんでしょうし。

1  Introduction
20 years have passed without significant reform is core banking system in commercial banks of Japan.
However, banks are doing the core banking system reconstruction in Java and the transition to open systems also exist.

Try to consider the modernization of the accounting system from a different approach as my idea.

2 Approach to modernization of the core banking system.
Development language
Core banking system of the current, which is built on IBM mainframe are built with PL / I.
Thinking on the development and future maintenance, cost savings
Building in Java is desirable.

Transaction Management
Transaction manager to processed by message-driven is preferred.
My idea is a Java application running on IMS / Transaction Manager.

The running Java applications that online processing in JMP region of IMS.
The running Java applications that batch processing in JMB region of IMS.

Database
I think reduction is possible operating costs by adopting a DB2.

Java Framework(Java Class Library)
Prepare the Framework of basic SQL commands and DL / I command the bottom layer.
Prepare a Framework for carrying out the business application programming in Java to the second layer. Provides the equivalent of almost the SAIL / ESA.
Class Library to the business program to create a common business Class library

Why choose IBM Mainframe from the environment that can run the IMS.

Investigating the possibility of implementation to some extent, but it does not mean that can be implemented fully.