Hey,

I've got a question concerning my database design. I would like to
rewrite my website for small ads.

There are two possible ways of creating my database:

1) Put all in one big table

simplified example:

id (1)
name (2)
address (3)
zip (4)
city (5)
request_type (6)
description (7)
size (8)
location (9)
style (10)
instrument (11)
user_id (12)


For some small ads i need fields 1,2,3,4,5,6,7,10,11
for another ones i need fields 1,2,3,4,5,6,7,8,9,12

Each row would be saved in one table with some fields empty.


2) Different model/tabel for each category

instruments
    id
    name
    address
    zip
    city
    request_type
    description
    style
    instrument

common
    id
    name
    address
    zip
    city
    request_type
    description
    size
    location
    user_id


I think I need about 6 or 7 categories...

The big question:
Should I create a extra model and database table for each small ad
category (version 2), or should I pack all categories in one table
(version 1)?


Regards,
Cronet

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