10. Data Attributes and Class Candidates

• 
    _______________________________________________________
   |             |_____________Useful classes______________|
   | Data        |         |      |     | Software |       |
   | Attribute   | Product | Book | DVD | Download | Game  |
   |-------------+---------+------+-----+----------+-------|
   | code        |    x
   | description |    x
   | price       |    x
   | weight      |            x
   | author      |            x
   | publisher   |            x
   | version     |                           x
   | releaseDate |                           x
   `-------------+------------------------------------------