ER Modeling & Normalization HW 1 (2.5 pts apiece) Instructions: For each case below, graphically represent entities and relationships between entities. Include primary keys, foreign keys where appropriate. For each entity add a couple of attributes (fields) and then provide a brief statement explaining why each entity (table) is in 3NF. Data for an artificial intelligence conference needs to be collected. The conference has a variety of sessions scheduled over a two-day period. All attendees must register for the sessions they plan to attend. Some speakers are presenting only one session, whereas others are handling multiple sessions. Each session has only one speaker. cream An online retailer of ice cream maintains a long list of unique ice cream flavors. The shop purchases ice cream from a number of suppliers; however, each specific flavor of ice cream is purchased from only a single supplier. Many of the customers are repeat purchasers and typically order at least four flavors of ice cream in each order