We now have a plan of attack and a preliminary architecture for our application. We can create a Unified Modeling Language sequencing diagram to illustrate what will happen when a visitor uses our mashup.
 |
If you do not know UML, do not worry. This diagram keeps the UML notation simplified and is easy to understand. This is basically a fancy way of summarizing the steps that a user goes through to load a set of pictures from Flickr. While there are just three things a user must do, this diagram shows sequentially what happens behind the scenes.
This diagram gives us a good idea of what we are dealing with in terms of technology. Let’s take a look at some of the new formats we will encounter.