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I’m making a site like StackOverflow in Rails but I’m not sure if it’s necessary for the Votes on a question to be stored in a separate table in the database.
Is there any good reason to separate the data?
Or could I store the Votes as a single sum in a field of the Questions table?
How would you know if a user voted on a question without keeping a votes table? Or like this website that holds you to X votes a day, how would you know how many votes a user made in the day? How would you keep track of how many up and down votes a user has done? I think good design practices pretty much scream for you to normalize the data and keep a votes table, with perhaps keeping a current +/- denormalized field in the question row for easy fetching.