a) Using the noun technique, read through this case and identify all the nouns that may be important for this system. You may also find it helpful to read back through the case descriptions for "On the Spot Courier Services" in previous chapters.

b) Once you have identified all the nouns, identify which are classes and which are attributes of these primary classes. Begin constructing a class diagram based on the classes and attributes you have identified.

c) Now that you have identified the classes, determine what the relationships should be between the classes. Add multiplicity constraints, being especially cognizant of zero-to-many versus one-to-many differences.

d) Finalize the class diagram, including all your classes, attributes, relationships, and multiplicity constraints.

Submit your final version of the class diagram.