How do you interpret what seems like a contradiction, in the highlighted statements side by side in the attached screenshot?
To continue here is what the AIRBUS MEL says on this issue ( the specific MEL has been formed based on requirements from the MMEL) .
It would appear that the highlighted statements in the first screenshot , on the the right ( database currency ) serve as means to deviate from the requirement on the left . However this is not clear and they come from different parts of the same manual .