4.2c Enhancing a Data Model

Assume the following problems are models for a bank. Derive the models for the following problems by adding to the model shown below.

Update this model so that you can answer the following question: What percentage of the bank's checking account holders are bank employees? (Hint: Add an Employee object set to the model first.)

Update the revised model (from question 1) to answer the following question: How many tellers have savings accounts with the bank?