Hi Marcelo,

This can be accomplished in two ways, one is user made (1) and the other is automatically generated (2):

(1) - A Genio developer can model the systems withe the graphical interface in Definitions > Tables > Relational Model

(2) - The other way is trough the Technical Documentation, this can be obtained in Management > Reports > Technical Documentation, then when you go to the Tables and click the Table Name you can see the representation:

You can only get a representation of the area you are checking since the whole model can be quite extensive.

Hope this is what you needed.