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Can someone show me what a good dependency matrix looks like and specify why?

Tags:

java

dependencies

intellij-idea

matrix

sonarqube

I would like to start using DSM, but not sure how to get started.

What does a good dependency matrix look like and why? How does it work?

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JavaRocky Avatar asked Aug 20 '10 23:08

JavaRocky

People also ask

What is the purpose of a dependency matrix?

DSM stands for Dependency Structure Matrix – a method that helps you visualize dependencies between the parts of your project (modules, classes, and so on) and highlight the information flow. DSM analysis can be used to see how changes will affect the project.

What is dependency matrix in project management?

Dependency structure Matrix (DSM) is a square matrix used to represent the project dependencies. A quick look at the DSM should convey what are the other tasks that are dependent on the output of a given task. Its visually compact way to represent complex systems is one of its biggest advantages.

1 Answers

Erik Dörnenburg gives the best description I've seen, including some good examples of how arrangements of the graph can expose structural issues. Briefly:

  • as others have mentioned, anything above the diagonal indicates a cycle, which essentially means that your boundaries are "fuzzy" (not clean)
  • smallish squares (well, lower triangles) along the diagonal == good, if the components are grouped according to hierarchy
  • on the other hand, heavily weighted rows or columns == possible issues: either
    • rows: you have a component/group that lots of others depend on (maybe it's trying to serve too many features), or
    • columns: you have a component/group that depends on lots of others (maybe it's trying to take care of everything itself, instead of delegating)
like image 135
Zac Thompson Avatar answered Sep 21 '22 11:09

Zac Thompson
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