Initial Database Design

At the moment, I have collected all data supported from the client, I also search all possible sub-categories that should be displayed when I am searching layout design on other ecommerce supermarket online

From these, I have got a initial database:



the database will be updated when me and my client have finished discussion.
For example: I think I should have a table called tax so that the shop owner is able to change the tax for different years, after changing, every product in shopping cart will be plus with new tax.