Help with UML, please :(

[sandeep]

Hi everyone,

I have a UML assignment due in a couple of days and I have tried understanding it but I can't figure it out for anything.

Here's what the main scenario is:

The league is made up of a number of teams, and in the course of a season each team plays every other team twice, in "home" and "away" fixtures, gaining 3 points for a win, 1 point for a draw and 0 points for losing. The league table is made up by aggregating these results: a basic requirement of the system is that it should be able to store the results of all matches played and display the current state of the system.



The fixtures committee meets monthly to plan the fixture list for the coming month. The committee allocates a referee to each match, and when the match is played the referee should be able to enter the result of the match (including cancellations and postponements) and details of any disciplinary offences into the system.



The system must hold details of all players who are registered with the league for the current season. The league would also like to encourage teams to use the system to enter details of the team selected for a particular fixture, any substitutions made, details of scorers and so on.

I basically have to create a Use Case, Domain Model and Sequence Diagram from this scenario.

Can anyone give me any guidance?

I have made a poor attempt at the Use Case but I know it is wrong.

 

[Mul]

What exactly is the problem? Are you stuck with a particular part of the diagrams or do you not know where to start?

 

[sandeep]

What exactly is the problem? Are you stuck with a particular part of the diagrams or do you not know where to start?

Well it's not knowing where to start and the fact I'm a bit lost, I can't interpret from the scenario what information I need to put in to get the complete correct diagrams.

Here's a screenshot of the Use Case I did, which may look very wrong: