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- $a="15540";
- table polls
- poll_id
- description
- table poll_questions
- question_id
- poll_id (foreign key to polls)
- question_text
- table question_answers
- answer_id
- question_id (foreign key to poll_questions)
- answer_text
- table user_answers
- id
- user_id (foreign key to users)
- answer_id (foreign key to question_answers)
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