e51132ed_Why_is_better_than_phpMyAdmin___Comment
[Feature] Foreign keys [phpMyAdmin 3.3.9] limited [Adminer 3.1.0] complete [Comment] 
It is not possible to create multi-column foreign keys in phpMyAdmin. You have to create an index manually before you create the foreign key. Adminer offers a foreign keys interface directly in create/alter table.
Adminer - Why is better than phpMyAdmin?
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