relations

I'm about to insert data into a database which has some relations between three tables. base1.col2 -> base2.col1 (integers) base1.col3 -> base3.col1 (integers) Now, my question is: when I insert data into the database, how do I maintane the relation between the inserts of table base1, base2 and base3? More clearer: base1 is the mail table of articles, and in base2 I put re resumes, and in base3 the whole article. When I'm inserting a new article, how do I keep the relation? Thanks!! -- "And I'm happy, because you make me feel good, about me." - Melvin Udall ----------------------------------------------------------------- Mart'n Marqu's email: martin@math.unl.edu.ar Santa Fe - Argentina http://math.unl.edu.ar/~martin/ Administrador de sistemas en math.unl.edu.ar -----------------------------------------------------------------