relational data base

hello. I'm trying to build a data base, that has to relate a specific field id to another table in the data base. Something like this: tb1.name -> tb2 where tb1.name is a string equal to the tb2 data base name. how is this relation done? How can I select a determine table, depending on the name field of the tb1 table? 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 -----------------------------------------------------------------