MC39 Anonymous Pop Quiz 1: Conceptual Modeling

February 15, 1999

The following questions all refer to the POST conceptual model from page 116 of the Larman text.
  1. The multiplicity is missing from the ProductSpecification end of the association with Item. What should it be? Why?
  2. What do you think about the Described-by association between SalesLineItem and ProductSpecification: Is it appropriate to include this association? Why or why not?
  3. The Captured-on association between Sale and Post is shown as 1-1. Two possible readings for "captured-on" are "was captured on" and "is the current sale captured on." For each of these possible readings, either explain why the 1-1 multiplicities make sense or say what alternative multiplicities would be appropriate.