[Maven]Different between Inheritance and Aggregation.

Inheritance is used for sharing common things between your projects, such as 3rd party library dependency or properties, or scm locations.

Aggregation is used to build your projects as a group. You want aggregation, but that doesn't mean that you won't also be using inheritance to factor out common stuff.

轉自：
http://stackoverflow.com/questions/6541499/maven-does-project-inheritance-or-aggregation-better-support-this-scenario