Part II: including external jars in your design

[Allexicus Kernikus]

Within the Component Diagram, would it be advisable to denote an external tool (a jar file) as an external system which is accessed by a DAO on the integration tier? Or as a simple component on the business logic and presentation tier?

Also, a simple jar file should not be referenced within the deployment diagram, since it is packaged within the application, correct?

Many thanks in advance! - Alexander