Hi everyone, I'm implementing Odoo 13 community in my business and I want to make a few changes in the database structure.

I want that the categories of products to have attributes, for example: 

category      attribute 

switch        fiber_ports_quantity

switch        isadministrable

switch        isPOE

So I want to create a table: category_attributes

Finally other table: product_attributes, so I can match all the attributes values to one specific product, for example:

product id    category     attribute                     value

product1       switch          fiber_ports_quantity     '5'
product1       switch          isAdministrable            'true'

product1       switch          isPOE                            'false'

I dont think that I can do this without making any changes in the database, so my question is:

If I make these changes(create some tables and add columns to existing tables), will i be able to update to a newer version without conflicts? 

If yes, should I do this directly from the database or the Odoo API is a better choice?

Thank you!