How can I make a ONE model for edit delete update?

[eluser]ogib[/eluser]
This is mysql databases on my project.

category|c_id
product|p_id|c_id
properties|pr_id|p_id

To clarify: the category table contained in the categories of products in the product table contains only those products in a table containing all the properties for The Nature products. The Nature of the products are very different for each product!
How can I make a ONE model for edit delete update?
Sorry for my terrible English!