The Legacy-to-web connection

摘要

This paper is about building web applications that use your existing computer systems. With the massive investment in existing systems, it is inappropriate to talk about replacing them with new systems. The problem with existing systems is that they were often developed before today's standards so there are a ragbag of hints, tips, tricks and techniques needed to get to the data and applications. As standards are changing so rapidly, it sometimes proves difficult to connect to systems developed recently.