3. Is there are Many-to-many binary relationships in your design of #2 above? Propose a way to modify the design to eliminate such relationships. Redraw the modified ER diagram if you have think changes are needed. 4. Draw one ER model diagram (with names and multiplicities) showing three entities, Truck, Store and Driver. There are two relationships: the relationship "delivers to" between Truck and Store and the relationship "drives between Truck and Driver. Each truck is assigned to no more than 5 stores, and each store has one designated truck. Each driver has one or none assigned truck and a truck at different time may have different drivers. The primary key of Truck is truckNo, the primary key of Driver is driverName, and the primary key of Store is storeNo. 5. Give the relation schemas (in text form) of above tables, indicating primary and foreign keys. 3. Is there are Many-to-many binary relationships in your design of #2 above? Propose a way to modify the design to eliminate such relationships. Redraw the modified ER diagram if you have think changes are needed. 4. Draw one ER model diagram (with names and multiplicities) showing three entities, Truck, Store and Driver. There are two relationships: the relationship "delivers to" between Truck and Store and the relationship "drives between Truck and Driver. Each truck is assigned to no more than 5 stores, and each store has one designated truck. Each driver has one or none assigned truck and a truck at different time may have different drivers. The primary key of Truck is truckNo, the primary key of Driver is driverName, and the primary key of Store is storeNo. 5. Give the relation schemas (in text form) of above tables, indicating primary and foreign keys