db/models:
db/models:

Fixed a constraint to match the .sql schema definition.


Former-commit-id: c2cee000c09dec80624d4974bc44f6e3e78628cf [formerly c2cee000c09dec80624d4974bc44f6e3e78628cf [formerly b0a79676e7bba300a431af1399775597f40ff52d]]
Former-commit-id: ade486c70aef942257326a1a84be6724432aa71d
Former-commit-id: 880af4af13af50c8daab58c212627c93f0f41f90
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine