Good Morning, I have a question, is it possible to insert constraints on the attributes of the same table when creating or inserting? Let me explain. An example: if I have the Customer table with Name, Surname, Company name, etc., can I insert a constraint in which I have to insert either the Company Region or the Name and Surname but does one of the two information have to be there? Or also in another example: if I have field1 field2 field3 and field4, can I insert an automatic constraint that assigns field4 a value which is the sum of field 1 field2 and field3?
I hope the problem is solved, thank you
