| NOTAS: | Each of Jackson's books has expanded on the previous one. PRINCIPLES OF PROGRAM DESIGN was about program design. SOFTWARE DEVELOPMENT was about systems development (specifically, for information systems). Now, SRS takes it further, and considers techniques for specifying different kinds of systems, and systems that require multiple viewpoints to specify them. One of the main points of the book is to promote the idea that many systems must operate in multiple "problem domains" and so require multiple techniques in their specification. (Does your information system also have security/access requirements in addition to its functional requirements? Then you have a "multi-frame" problem, and you should read this book.) The second major emphasis of the book is on describing the "application domain" -- the real world where the system's users conduct business -- before embarking on designing the system. That is, on understanding the problem befor you jump into trying to solve it. If you've ever worked on a huge system development project that turned out to be a catastrophy because half way through the project you discovered that there was a whole area of user requirements that you didn't even know about, then you should read this book. Find out what went wrong and get some ideas about how to avoid it in the future. This is an excellent book about specifying computer systems, and I can recommend it to anyone. It is especially highly recommended if you enjoy thinking about software development at a fairly high, abstract level (a level above the one where you are designing code and database structures)." |
