This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
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?