alter foreign key
ALTER TABLE Employee
ADD FOREIGN KEY (DeptNo) REFERENCES Department(DeptNo);alter foreign key
ALTER TABLE Employee
ADD FOREIGN KEY (DeptNo) REFERENCES Department(DeptNo);foreign key in php
CREATE TABLE Orders (
OrderID int NOT NULL,
OrderNumber int NOT NULL,
PersonID int,
PRIMARY KEY (OrderID),
CONSTRAINT FK_PersonOrder FOREIGN KEY (PersonID)
REFERENCES Persons(PersonID)
);Copyright © 2021 Codeinu
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