being deleted

The following two SQL relations are implemented according to CREATE TABLE Doctor ( ssn CHAR(11), name CHAR(30), specialty CHAR ( 30), experience INTEGER, PRIMARY KEY ssn ); CREATE TABLE Patient Physician ( ssn CHAR(11), name CHAR(30), address CHAR(100), age INTEGER, doctorSSN CHAR(11), firstAppointment DATE, PRIMARY KEY ssn, FOREIGN KEY (doctorSSN) REFERENCES Doctor(ssn) ON UPDATE CASCADE ON DELETE SET NULL ); Indicate whether the following statement is True or False. . Deleting a doctor may directly result in patient records being delet O True