You are to come up with a data model, utilizing an Entity Relationship Diagram,

Question

You are to come up with a data model, utilizing an Entity Relationship Diagram, for tennis tournaments incorporating the following scenario. Versions must contain all entities and relationships and note cardinality, no attributes are required. A tournament can have many players, and may not have any players currently signed up for the tournament. A player does not have to be associated with a tournament can be in more than one. A player can play more than one match and a match can be played by more than one player. A player need not be associated with a match and a match need not have any players associated with it. A given court can have many matches but a match can only be played on one court. A court needs to have at least one match and every match needs a court. Every tournament category needs an award, i.e. first place, second place, etc. Each category may not have a winner (player (-s)) of that award and every player need not be associated with an award. An award can be given to more than one player (doubles matches) and a player may win more than one award. Please help me with the diagram and understanding, I got pretty far but want to check if I am correct for my own personal grow, and the last part is tricky, please only people that know their stuff answer

Explanation / Answer

The data model in such products incorporates relations but is not ... Indexes can speed up data access, but they consume space in the database, and must be ...... from the way the model looks when you draw it in an entity-relationship diagram: ...... The following scenario illustrates how a database design might incorporateSeveral "stylized facts" (some of which will be discussed in the following) ... generally possible to build good descriptive models without collecting data, ... In section (ii) we shall provide a preliminary overview of the tangled relationships between the .... But here come the problems stemming from the experimental evidence A sample Entity-relationship diagram using Chen's notation In software ... Although the term entity is the one most commonly used, following Chen we .... Attributes are often omitted as they can clutter up a diagram. dbForge Studio for MySQL. Data model 4 . but is of less help in integrating pre-existing

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