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Old 05-02-06, 09:35
poison_chicken poison_chicken is offline
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survey scales

dear db gurus,

how do i handle this situation (in my db design)? i have a survey question such as:

1. On a scale from 1-10, how do you rate the instructors performance?

my original idea was to have in the response table a field that can hold values 1 to 10. however, is it better to have a record for each choice 1 to 10 where the field holds only 0 or 1?

e.g.

Design 1

responseTable
-----------------
response1 3

Design 2

responseTable
-----------------
response1 option1 0
response1 option2 0
response1 option3 1
response1 option4 0
etc.
response1 option10 0

that is, the participant rated their instructor a 3.

Last edited by poison_chicken; 05-02-06 at 11:41.
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Old 05-03-06, 03:46
loquin loquin is offline
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IMO, option 1 is the better choice. A relational database is more flexible and handles data that is in columns quite well. Trying to process data that is in rows is much more difficult.
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Old 05-03-06, 13:49
poison_chicken poison_chicken is offline
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thanks for the help. that was my original thought.
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Old 05-03-06, 17:27
urquel urquel is offline
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Is 1 good or bad?
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Old 05-03-06, 20:29
poison_chicken poison_chicken is offline
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urquel, you tell me.
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Old 05-04-06, 11:25
urquel urquel is offline
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That's why I asked. When administering a survey, you have to explicity state what a numeric answer means.

The survey question states as follows:

1. On a scale from 1-10, how do you rate the instructors performance?

To me, 1 could be the best or the worst. But I can't relate a number to performance unless I know what you mean.
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Old 05-08-06, 16:14
poison_chicken poison_chicken is offline
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o i c

...what you mean. yeah, you are right...1 could be bad or good, theoretically. however, the 10 point scale is an intuitive scale, and usually needs no explanation, but i guess i better include that in the directions.

either way, the "instructor rating" was just a dummy example...and in fact, the 10 point scale is irrelevant to my design confusion....it could have been 1-7, 1-5, just not 0 or 1.
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