2017-04-05.12-31-29png TESTING YOUR UNDERSTANDING Exercise 7-1 Figure 7-25 shows an initial data model for a small ibrary.It is incomplete, so as you answer the questions below consider what else might need to be included. a Explain to the librarian what the initial data model means. b) Design tables for database which would capture the information represented by the model, Include primary and foreign keys and other appropriate constraints Title cat num belongs to title author m 11 Person tem ast name rst name Om copy num purchase date Figure 7-25. Draft data model for a small library