Add unique constraint for sessionUser and movie ID
Add unique constraint for sessionUser and movie ID

Each movie should have one vote per user per session

RubiginousChanticleer/rubiginouschanticleer,CantillatingZygote/rubiginouschanticleer,RubiginousChanticleer/rubiginouschanticleer,CantillatingZygote/rubiginouschanticleer