Others

• is-implemented-as-a relationship

  • You could implement a stack using a linked list. But you shouldn't derive a stack from a linked list. A stack is not a linked list.
  • Public inheritance DOES NOT do “is-implemented-as-a”.

• uses-a relationship

  • A computer can use a laser printer, but you shouldn't derive a printer class from a computer class.
  • Public inheritance DOES NOT do “uses-a”.