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

[eluser]ogib[/eluser]
Thank you for your help, but it comes to the table properties in which each row contains a characteristic driven from table product.
For example: a product "shoes" has 10 description, this means 10 lines in the table properties, and another product "hat" has two characteristics that means 2 rows in table properties.
So how how can I make a ONE model for edit delete update
Thank you