Bug 29409: Check for data that violates a constraint to avoid update problems

Bug 29409: Check for data that violates a constraint to avoid update problems

Signed-off-by: Joonas Kylmälä <joonas.kylmala@iki.fi>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit e4455a589372e3205f9a7456478ad4585c90bedb)

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
(cherry picked from commit 6ea331417ea4a114ab9b5aec2a7885118942be21)
Signed-off-by: Arthur Suzuki <arthur.suzuki@biblibre.com>