UML gives all stakeholders in the development ... between different objects in the system that is time ordered. Collaboration diagrams - The collaboration diagram helps identify the interactions ...

Figure 6 gives such interactions for the ProcessOrder and CheckStatus use cases in our running example using a sequence diagram. The interaction in our example is quite simple, so the sequence diagram ...

In our third installment on UML we'll show you how to use sequence diagrams as a tool in your application development and an understanding of object interaction.