Obviously a 600 column table is inappropriate, because tomorrow it will be 601.
Sounds like about three tables with just a few columns each. 

user table
    user_id
    user_name, other login details
    (index user_id)

question table
    question_id
    question
    answer
    (index question_id)

answer table
    user_id
    question_id
    answer
    (index user_id+question_id)

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In reply to Re^3: Help on questionnaire by gmargo
in thread Help on questionnaire by Anonymous Monk

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