entity - relationship modeling
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Sample solution suppose you are given the following requirement for simple database for the national Hockey league (NHL) :the NHL has many teams ,each team has name ,city ,coach ,captain,and set players,each player belongs to only one team, each player has name,position (such as left wing or goalie) skill level ,and set of injury records, team captain is also player, game is played between two teams(referred to as host_team and guest_team) and has data(such as may 11th,1999) and score (such as 4 to 2) construct clean and concise ER diagram for NHL,database using the Chen notation as in your textbook.list your assumptions and clearly indicate the cardinality mapping as well as any role indicators in your ER diagram?