Re: MySQL design problem for tracking inventory

> ... any thoughts or suggestions ...

Below script models a few inventory items using a small experimental db (XDb3) that accepts new products with new option at run time. Db takes care of schema/normalization on the fly. Similar could be performed with RMDB using generic modelling.

// Create directory items to organize things.

(CREATE dir item *product)
(CREATE dir item *"ski jacket")
(CREATE dir item *size)
(CREATE dir item *color)
(CREATE dir item *qty)

// Create 1000 small-black ski jackets
(CREATE "ski jacket" inst *

& product inst it
& it size +small
& it color +black
& it qty +1000)

// Create 2000 small-red ski jackets
(CREATE "ski jacket" inst *

& product inst it
& it size +small
& it color +red
& it qty +2000)

// Create 3000 small-blue ski jackets
(CREATE "ski jacket" inst *

& product inst it
& it size +small
& it color +blue
& it qty +3000)

// Add new product type: socks
(CREATE dir item *socks)

// Add new option: material
(CREATE dir item *material)

// Create 100 small-cotton socks
(CREATE socks inst *

& product inst it
& it size +small
& it material +cotton
& it qty +100)

// Create 200 blue-silk socks
(CREATE socks inst *

& product inst it
& it color +blue
& it material +silk
& it qty +200)

// Create 300 cotton/polyester socks
(CREATE socks inst *

& product inst it
& it material +cotton
& it material +polyester
& it qty +300)

// Find all products that are blue.
// Finds small-blue ski jacket and blue-silk socks. (SELECT product inst *

& * color blue)
Received on Sat Mar 12 2005 - 03:54:07 CET