help needed about logic.

[eluser]demiRon[/eluser]
from Turkey.

Now:

category table like -> id | cat_name | seo
sub-category table like -> id | cat_id | acat_name | seo
content table like -> id | cat_id | acat_id | txt | seo

now i try to call category/sub-category
so i havent to make many fonctions for every category if i can solve like this.
if not; i have to make each fonction for each category.

( + where r u from? )