- How does a category differ from a regular shared subclass? What is a category used
for? Illustrate your answer with examples. 2. For each of the following UML terms (see Sections 3.8 and 4.6), discuss the corresponding term in the EERmodel, if any: object, class, association, aggregation, generalization, multiplicity, attributes, discriminator, link, link attribute, reflexive association, qualified association. 3. Discuss the main differences between the notation for EER schema diagrams and UML class diagrams by comparing how common concepts are represented in each.
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