Game Player management entity-relationship (ER) diagram has entities like users, users_bets, matches, team, and players. It should be noted here that entity-relationship diagrams are used to analyze the structure of the database. It shows relationships between entities and their attributes. These entities have attributes like team_id, Player_id, name VARCHAR, Position ENUM, team_id, match_id, date, team_id_home, team_id_away, score_home, u_id INTEGER, and match_id INTEGER. As shown in the below image, the ER diagram is a graphical representation of an ER model. It is currently one of the most popular and widely used database design tools. As stated above, the three main components of the entity-relationship model are entities, attributes, and relationships.