Rate Up or Down system

Hey guys,

What are your opinions on rating systems in this case? I have users submitting ideas. Now other users can rate an idea UP or DOWN. I want to keep track of what user rates what idea, up or down, and want to be able to display this information on a page of my site, ordering by highest rated ideas or lowest rated ideas.

Is this the best way to go about this?

[B]IDEAS Table[/B]
ideaID                    (auto increment prim key)
ideaText                   (actual paragraph of text detailing idea)
userID           (userid of user that submitted idea)

[B]RATINGS Table[/B]
ratingID       (auto increment prim key)
rateType       (single boolean, 0 for rate down, 1 for rate up)
userID        (userid who rated)
ideaID        (ideaid of the idea being rated)

So is this approach the best approach here? The only thing I fear is (definitely hypothetical) what if there are 1 million users, and 1 million ideas, and they each make ratings on many ideas. This means there will be millions of records in the ratings table. Is this still efficient ??

nvm i got it. and idk how to mark this as solved

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