Im modelling a exercise that it seems a bit complex and I have some doubts. The context is:
there are events that are created by organisers and atendded by participants (organisers and participants are users)
the organisers create events, and for each event the organizer can create multiple registration types (for example a registratio type “general” and other “plus”).
For the users to participate in a event there is some user, that is the person that is in charge of registration that do the registration.
can register him, him and more people or just other people in a event in one ore more specific registration type. For example the user can do 2 registations for 2 people in a registration type “general” and 2 registrations for other 2 people in a registration type “plus”.
dont need to be register in the system to register in a event but after the registration the user is registered in the system
- the registration type has a period(start and a end date) for users to be able to register in it
- can create, edit event
get the status of capacity of a specific registration type in a event that he created (for example there are already 10 registrations and the capacity is 20)
get a list of all participants register in a event that he created
get a list of all participantes register in a specific registration type of a event that he created
get all participants register in a specific event that he created by status(complete, waiting payment)
To model this i started to identify some entities and add some attributes:
Event: idEvent, name, date, citiy, zip_code, address, place, description, date User: idUser, name, email, password Organizer: idOrganiser, description(ex: organizer name not necessary the user name and more information like a description of the organizer) Registration: idRegistration, status(ex: paid, waiting) Registrationtype: name, price, capacity, startdate, enddate
My doubts are about the relationships and if its necessary to create more tables to model this context. Some issues that Im having is:
1- The relationship beween User, EventOrganizer and Event I dont know if its ok, a user can create multiple events and a event is organized by only one organizer, so maybe it should be ok.
2- A user, that dont need a account, register him or him and more people or just other people in a event in one or more registration types available on the event. And the user that does the registration is the person in charge of the registration. Also these registered people by the person in charge become participants in the event after the registration. Also the organiser needs to have access to all participants of the event and also list the participants by registration type. So, I dont see how to model this part, there is a relationship between User and Participant? Or between User and Registration? Or other thing? Its necessary to create also another table for the person in charge?
3- Then, the event can have many registration types, so the relation 1 to many between Event and RegistrationTypes should be ok, but Im in doubt ifRegistrationType dont need also to be related with Registration?
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