Answer:

Explanation:

1 : Suppose you are given the following requirements for a simple database for the

National Hockey League (NHL):

 the NHL has many teams,

 each team has a name, a city, a coach, a captain, and a set of players,

 each player belongs to only one team,

 each player has a name, a position (such as left wing or goalie), a skill level, and

a set of injury records,

 a team captain is also a player,

 a game is played between two teams (referred to as host_team and guest_team)

and has a date (such as May 11th, 1999) and a score (such as 4 to 2).

Construct a clean and concise ER diagram for the NHL database.