Question

I’m not an expert in databases, so this is complex for me but maybe it’s no for a lot of people. I have the following:

quiz: Table which contains some quizzes

project: Table which contains some projects

project_has_quiz: A many-many relationship table project-quiz

team: Table which contains some teams

event: Table which contains some events (a project plus a date and some other fields)

event_has_team: A many-many relationship table event-team

Now, I have to assign an order for the quizzes for each team in an event. For example:

Say you have 5 quizzes a, b, c, d, e.

You create a project projectA with quizzes a, b and c.

You have two teams: teamA and teamB

You create and event eventA with projectA and you relation it with teamA and teamB.

Now I have to put somewhere that eventA with teamA must have a quiz order a, b, c and eventA with teamB must have a quiz order c, a, b.

What is the best way to do this?

First idea I have is to build another table: event_has_team_has_quizOrder, with a column quizOrder having inserted through programming code a, b, c and c, a, b. But I don’t think this is the most pure way to achieve this and that this surely have problems of denormalization.

Thank you very much.

Answer 1

you could do

event_has_team_has_quizOrder

(event, team, quiz, sequence)


eventA, teamA, a, 1
eventA, teamA, b, 2
eventA, teamA, c, 3
eventA, teamB, c, 1
eventA, teamB, a, 2
eventA, teamB, b, 3