database ERD CRATE DATABASE

Feb 3rd, 2012
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1-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 three coaches (offensive, defensive, and physical training coaches). During the season, each team plays two games (home and visitor) against each of the other teams. Given those conditions, do the following: a. Identify the connectivity of each relationship. b. Identify the type of dependency that exists between CITY and TEAM. c. Identify the cardinality between teams and players and between teams and city. d. Identify the dependency between COACH and TEAM and between TEAM and PLAYER. e. Draw the Chen and Crow’s Foot ERDs to represent the JCBC database. 2-Use the following business rules to create a Crow’s Foot ERD. Write all appropriate connectivities and cardinalities in the ERD. • A department employs many employees, but each employee

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1-The Jonesburgh County Basketball Conference (JCBC) is an amateur basketball association. Each city in the county has one team as its representative.Here we have 5 entities1. CITY2. TEAM3. GAME4. PLAYER5. COACHa)1:1 in the middle of CITY and TEAM 1:M in the middle of TEAM and PLAYER 1:M in the middle of TEAM and COACH 1:M in the middle of TEAM and GAME b)Dependency: CITY backers TEAM. There is 1:1 relationship in the middle of CITY and TEAM c)Cardinality in the middle of TEAM and PLAYER is 1:M i.e. A group can have 9 to 12 players while a player can fit in with just 1 group Cardinality in the middle of TEAM and CITY is 1:1 i.e. A group can be supported/ spoke to by just 1 city and city can support stand out group d)TEAM uses COACH, A group can have 1 to 3 mentors while a mentor can fit in with just 1 TEAMTEAM has PLAYER, A team can have 9 to 12 players while a player can belong to only 1 team-The primary parts are TEAM and GAME. -Each joint efforts one another group in any event twice. -To play a diversion, two groups are fundamental: the home group and the guest group. -Each joint effort once as the home group and once as the guest grou

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