How can I model this class in a database?

Question

I need a little of help. This is my design to organize several categories.

   Category 1
     Sub Category 1.1
       Sub Category 1.1.1
     Sub Category 1.         


        

Answer 1

Here is my recommendation. Create Three tables. I am assuming that each table has different columns

Category { Id, Name,...} 
SubCategory {Id, Name, ..., **ParentID**}  [ParentID is a FK from Category table Id Column] 
SubSubCategory {Id, Name, ...,  **SubParentID**}  [SubParentID is a FK from SubCategory table ParentID Column]