Re^2: settuping up pseudo tables in mysql shopping cart


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Re^2: settuping up pseudo tables in mysql shopping cart

by coldfingertips (Pilgrim)

on Nov 28, 2005 at 19:51 UTC ( [id://512349]=note: print w/replies, xml )

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in reply to Re: settuping up pseudo tables in mysql shopping cart
in thread setting up pseudo tables in mysql shopping cart

Are you saying to have a table set up like this?

id   unique userid  itemname itemnum  qty  price itemweight
307  af4jsdfds      frog     34       4    2.50   4.5
308  8843kksd       bear     12       2    8.00   5.0
309  af4jsdfds      bear     5        3    8.00   5.0
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And then when I need the information for a userid, I look up every column containing it?

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Re^3: settuping up pseudo tables in mysql shopping cart
by chromatic (Archbishop) on Nov 28, 2005 at 21:34 UTC

No. Create a table for each unique type of entity in your system: a Customer, perhaps an Address, an Item for sale, and an Order. Then create a table for each one to many relationship in the system. An Order contains many Items, so you need an Order_Items table.

Then to add an order, find the Customer's id (creating a Customer or using an existing one). Create a new Order. Add a row to the Order_Items table for each Item in the Order.

Every unique entity in the system should occur only once in the system. That's basically the normalization rule to go by.

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