i have a question concerning a many-to-many problem where I want to add
an additional value to the mapping table.
In my model I have the entities "parameterset", "key" and "mapping".
Between parameterset and key I have a many-to-many relationship.
Therefore, mapping is used to solve this problem.
The entity "mapping" has two colums parameterset_id and key_id. Besides
them, I need another column to add a specific value to the mapping
(e.g. 1.0, 'Test' or 2006-12-14). The problem here is the datatype of
the "value" column which I consider to add to my mapping entity in
order to ...