True - False 3 In Second Normal Form: no partial functional dependencies exist from the kes | In the relational model, the Primary key could be single-attribute or multi-attribute (i.e., composed of more than one attribute) A relationships at a supertype entity indicates that all subtype entities will participate in the 3 Weak entity exists independently of other types of entities 3. relationship [ 4. Q3. How do you represent an ER Diagram? A bank manages its customers, their accounts and the transactions (i.e., deposit and withdraw of amounts of 13 points money) performed by customers on their accounts. Each customer has an identifier Cust_No, Name, City, and a Type. Each Account is identified by Acc_No, has a Date Opened, an Actual Amount of Balance, the Date of Balance, and the currency (like SAR, USD, ...) Customers perform Transactions on their Accounts. A transaction is identified by a number Tr_No, has a Date, Type, and Amount. Assume that each person owns one or several accounts, and several transactions are performed daily concerning each account. 1. Develop (Draw) an ER (Entity Relationship) diagram as a conceptual model using the notation use in the course. Answer here