ForeignKeyAction
public enum ForeignKeyAction : String
                A foreign key action.
- 
                  
                  
The
CASCADEforeign key actionDeclaration
Swift
case cascade = "CASCADE" - 
                  
                  
The
RESTRICTforeign key actionDeclaration
Swift
case restrict = "RESTRICT" - 
                  
                  
The
SET NULLforeign key actionDeclaration
Swift
case setNull = "SET NULL" - 
                  
                  
The
SET DEFAULTforeign key actionDeclaration
Swift
case setDefault = "SET DEFAULT" 
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        ForeignKeyAction Enumeration Reference