Correlate the reference option with why it is needed
Advanced Exposed
Reference options
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Match the items from left and right columns
CASCADE
SET_NULL
RESTRICT
NO_ACTION
We want to prohibit deleting an entity while this relationship exists.
The relationship will be set to null when the entity is deleted.
Similar option, we want to prohibit deleting an entity while this relationship exists.
We want to delete all entities related to the deleted entity.
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