Question

The Jonesburgh County Basketball Conference (JCBC) is an amateur basketball association. Each city in the county has one team as its representative. Each team has a maximum of 12 players and a minimum of 9 players. Each team also has up to 3 coaches (offensive, defensive, and physical training coaches). During the season, each team plays 2 games (home and visitor) against each of the other teams. Given those conditions, do the following: Identify the connectivity of each relationship. Identify the type of dependency that exists between CITY and TEAM. Identify the cardinality between teams and players and between teams and city. Identify the dependency between COACH and TEAM and between TEAM and PLAYER. Draw the Chen and Crow’s Foot ERDs to represent the JCBC database. Draw the UML class diagram to depict the JCBC database.

Answer 1

From the above database there is M:N recursive relationship between GAME and TEAM because each team participates twice in a game. Once as a home team and second ly as a visitor's team There is 1:1 relationship between CITY and TEAM because each city has only one team. There is 1: M relationsh ip between coach and team. Each team has three coaches There is 1: M relationship between team and player. Each team has either 9 or 12 players. city team we can say team is functionally dependent on city Functional Dependency ; It is a relationship that exists when one attribute uniquely determines another attribute Team 1N Player A single row of table "Team" associates with more than one rows of Table "Player" Team 1:1 City A single row of table "Team" associates with only one row ofT able "City" СОАCН:ТEAM transitive dependency : A transitive dependency can only occur in a relation of three or more attributes.Here we have the third one is the specialization of the coach TEAMPLAYER transitive dependency A transitive dependency can only occur in a relation of three or more attributes.Here we have the third one is the position of the player. Connectivity of each relationships City to Team Relationship 1. City has Team 2. Team to Player Relationship 1 Team Нas Playe r 3. Team to Coaches Relationships M Coachos Toam Наs 4. Team to Matches Relationships M M Toam Has Mateh