why separate the products to 4 table?

On Fri, Jul 10, 2009 at 4:54 PM, kranthi <kranthi...@gmail.com> wrote:

> assign every product an unique product id. this can be done by an auto
> increment value in the primary table, then use mysql_insert_id() to
> get the product id.
> thereafter use the unique product id to refer to the product (in the
> database tables)
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Best Regards!
Wen Dong

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