One of the new functionalities of gvSIG is that you will be able to create relationships between tables through a common field or foreign key. You can configure all this new functionalities in the new Column manager.
Relation 1 to 1
We can create relations 1 to 1. In the field of one feature in one table you create a relation to other one feature in other table. In this example you can se how the field Conductor makes reference to other table where you see all the features related to this field.
Relation 1 to many
The relations 1 to many means that for each feature in one table, a multiple features from other table are assigned to that feature. It will be a list of features.
If you also configure its visualization:
List of values for a field
It’s also posible to configure a list of possible values for a field. This will be a closed list. In this case you can configure the label of how this possible values will be show.
Like in the closed list explain it before, you can set an expression of how the fields will be show in the form.