30. Delete an employee from Employee table with ssn = „12345‟( make sure that this employee has some dependents, is working on some project, is a manager of some department and is supervising some employees). Check and display the cascading effect on Dependent and Works on table. In Department table MGRSSN should be set to default value and in Employee table SUPERSSN should be set to NULL(COMPANY DATABASE NAVATHE BOOK)

30. Delete an employee from Employee table with ssn = „12345‟( make sure that this employee has some dependents, is working on some project, is a manager of some department and is supervising some employees). Check and display the cascading effect on Dependent and Works on table. In Department table MGRSSN should be set to default value and in Employee table SUPERSSN should be set to NULL(COMPANY DATABASE NAVATHE BOOK)