>Hi, first sorry for my english :)
>
>I'm trying to create a vfp oo framework using three tier aproach
>I don't understand communication between layers, for example business logic and data services.
>I know something UML and OO.
>Where can I find information about design vfp frameworks?

Hola Rodrigo,

Visita un thread reciente donde yo solicito ayuda relacionada con "n-tier tutorials". Alli me dieron varias buenas pistas para lo que tu quieres, entre ellas un documento en la pagina de Jim Booth.

Visit a recent thread where I asked about "n-tier tutorials". I was given good clues for what you're looking for, including a paper in Jim Booth's web site.

Alex