2. Draw an ER diagram for FOOTBALL TOURNAMENT DATABASE that captures given below requirements. Specify key attribute(s) of each entity set. Assume any relationship among entities, and specify cardinality ratio.[ 3 Marks] a. For TEAM entity, the system maintains TID, Team_Name, and City. Every Team has a unique team id. b. PLAYER details are recorded as PID, {Player_Name(Fname, Midname, Lname)}, Position, and TID. Both PID and TID store unique value for each player. c. The SCHEDULE entity contains the details as MID, DateTime, Day, Stadium, and TID. Both Match ID and TID have a unique value assigned to it.

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Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.