Data modelling

Assignment Definition:Use the data model designed in Week 2. This data model will be reviewed and taken from the conceptual model to logical and physical model status.Make sure you define the following:1. Select database management system (Oracle, SQL Server, MYSQL, etc) and identify the data types and sizes for all attributes.2. Make sure all relationships have been addressed and corrected.3. Review data model to make sure data model is in at least 3rd normal form (as defined by the normalization process).
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Scenario 2 â?? A Local Football League You have been asked to develop a database to
maintain details of the football teams signed up to play in a local league, including the
schedule. The database must maintain details of the name and location of each team, and
for each team the players (and their positions) who are on the team. So that a handicap
system can be developed later the database should maintain the gender, and age of each
player. Each player should also have one ‘phone number stored. Schedule and field
locations for each of the games the teams will play.
â?¢
Entities
Player
Team
Position
Player_Team
Match
Field
Attributes
For Player – Player_Id, First_Name, Last_Name, Date_of_Birth, Gender,
Age, Phone_Number
For Team â?? Team_Id, Team_Name
For Position â?? Position_Id, Player_Id, Position
For Player_Team â?? Player_Team_Id, Player_Id, Team_Id, Position_Id,
Contract_Start_Date, Contract_End_Date, Other_Comment
For Match â?? Match_Id, Team1_Id, Team2_Id, Match_Date, Match_Time,
Field _Id, Result, Special_Comments
For Field â?? Field _Id, Field _Name, Field _Address, Field _Capacity
Relationships
Player to Position â?? One to Zero or Many
Player to Player_Team â?? One to Zero or Many
Team to Player_Team â?? One to Many
Team to Match â?? One to Many
Position to Player_Team â?? One to One
Match to Field â?? One to One
Primary keys (identifier attributes)
Player_Id, Team_Id, Position_Id & Player_Id (Composite key),
Player_Team_Id, Match_Id, Field_Id
Business rules or assumptions are as follows:
1. One match can be played at one time on a giving date on one field.
2. Player may or may not participate in team, or they can play for more
than one match.
3. A player can hold only one position at a time in the playing team.
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ERD-

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