label in requirement_requirement table don't really need to be unique
@@ -917,7 +917,7 @@ CREATE TABLE usecase (
CREATE TABLE requirement_requirement (
from_id INT NOT NULL,
to_id INT NOT NULL,
- label VARCHAR(255) UNIQUE,
+ label VARCHAR(255),
PRIMARY KEY(from_id,to_id,label),
FOREIGN KEY(from_id) REFERENCES requirement(id),
FOREIGN KEY(to_id) REFERENCES requirement(id)
