The Community Blog for Business Analysts

Łukasz Pasek
Łukasz Pasek

Modeling complex logic with Warnier diagrams

Warnier diagrams are not well known. They were introduced in the age of Structured Systems Analysis and are now forgotten. However they are the best tool for solving complex problems. Sometimes you need to model complex logic with multiple different exception scenarios. Sometimes you need to come up with requirements for complex functionality like sorting elements by multiple parameters or importing/exporting data from excel to system database.

There is an excellent book explaining how to create Warnier diagrams: "Structured Systems Development' by Kenneth T. Orr. You need to read this book to learn how to creare this type of diagrams. But it is well worth doing.  This is quite short read with multiple diagrams and very well explained. One you start reading it is hard to stop until you get to the last page. Below is an example of one diagram I made to gave you a feeling what this is all about:

This entry was published on May 23, 2014 / Łukasz Pasek. Posted in Structured Systems Analysis (DFDs, ERDs, etc.). Bookmark the Permalink or E-mail it to a friend.
Like this article:
  9 members liked this article

Related Articles

COMMENTS

Only registered users may post comments.


Blog Information

» What is the Community Blog and what are the Benefits of Contributing?

» Review our Blog Posting Guidelines.

» I am looking for the original Modern Analyst blog posts.



Modern Analyst Blog Latests

Jarett Hailes
Jarett Hailes
As we start a new year many of us will take the time to reflect on our accomplishments from 2012 and plan our goals for 2013. We can set small or large goals. goals that will be accomplished quickly or could take several years. For 2013, I think Business Analysts should look to go beyond our traditional boundaries and set audacious goals. Merriam-...
2 Responses
Howard Podeswa
Howard Podeswa
Recently, I was asked by the IIBA to present a talk at one of their chapter meetings. I am reprinting here my response to that invitation in the hope that it will begin a conversation with fellow EEPs and BAs about an area of great concern to the profession. Hi xx …. Regarding the IIBA talk, there is another issue that I am considering. It's p...
12 Responses
Adrian M.
Adrian M.
Continuing the ABC series for Business Analysts, Howard Podeswa created the next installment titled "BA ABCs: “C” is for Class Diagram" as an article rather than a blog post. You can find the article here: BA ABCs: “C” is for Class Diagram Here are the previous two posts: BA ABCs: “A” is for Activity Diagram BA ABCs: “B” is for BPMN
1 Responses
Featured Digital Library Resources 
Copyright 2006-2018 by Modern Analyst Media LLC