2. Page 193, Problems and Exercises \#4-33a. (No need to answer questions b \& c.) Figure 4-33 shows an EER diagram for a simplified credit card environment. There are two types of card accounts: debit cards and credit cards. Credit card accounts accumulate charges with merchants. Each charge is identified by the date and time of the charge as well as the primary keys of merchant and credit card. a. Develop a relational schema. Figure 4-33