Homework 6 Sample Solution

Homework #6 Sample Solution
Note: As usual, this was created with System Architect.

Part 1: UML Versions of E10.2

(a) diagram; only changes are the multiplicity symbols

(b) diagram; only changes are multiplicity symbols

Part 2: UML versions of selected transformation rules

The diagrams will be the same in UML as they are in OMT except:

Multiplicity symbols are changed from dots to m...n symbols
Rules involving derived classes, attributes, and associations have no UML equivalent, since derived information (/attribute, and it's ilk) has no UML representation.

Part 3: UML version of the transformation between E10.2a and E10.2b

Start: The initial diagram:

Transformation T13: Add BookReference and JournalReference as subclasses of a new empty class, Reference

Transformation T11: Move the title attribute across the generalization from BookReference and JournalReference up to Reference.

Transformation T12: Move the Cites and Wrote associations across the generalization from BookReference and JournalReference to Reference. This only works because the identical association exists with all of Reference's subclasses.

Transformation T18: Convert the citationCode and positionNumber association attributes to link qualifiers. This also changes the multiplicity of the links. The result is the final diagram, 10.2b.