On Mon, 2003-07-21 at 07:04, Terence Ng wrote:
> Hi!
>
> I would like to create a database for products
> catalogue. I have many products with different
> specification.
>
> e.g.
> lamp A: Part no, Color, Raw Material, Wave length,
> Vf(V)20mA, lv(ucd)10mA
>
> ECG:Part no, Type, Iv, KHz, A, W, Im
>
> Should I put these products in one table, or in
> separate?
You need a good book/web site on database design and normalization.
*Basically*, though, every item that describes a product should go
in the "product" table. Then, every different color (and, say,
whether it pertains to "lamp" or "desk") should go in a "color"
table. Likewise with "raw_material", "wavelength" and "voltage"
tables.
Then, using Foreign Keys, you can link the product table to the
static fact tables to ensure the integrity of the data.
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