Supposed that each of the following Update operations is applied directly to the database state shown in the Figure 3.6. Discuss all integrity constraints violated by each operation, if any, and the different ways of enforcing these constraints. Please work on only problems b, c, f, g, and i. a. Insert into EMPLOYEE. b. Insert into DEPARTMENT. d. Insert into DEPENDENT. f. Delete the WORKS ON tuples with Essn = '333445555'. g. Delete the EMPLOYEE tuple with Ssn = '987654321'. h. Delete the PROJECT tuple with Pname = 'ProductX'. i. Modify the Mgr_ssn and Mgr_start_date of the DEPARTMENT tuple with Dnumber = 5 to $123456789' and '2007-10-01', respectively. j. Modify the Super_ssn attribute of the EMPLOYEE tuple with Ssn = $999887777' to '943775543'. k. Modify the Hours attribute of the WORKS ON tuple with Essn = $999887777' and Pno = 10 to '5.0'. 2. Consider the following relations for a database that keeps track of bank customers and their accounts: BRANCH (Branch Name, Assets, Bcity) CUSTOMER (CustName, SSN, Street, City) DEPOSIT (Branch_name, AcctNo, CustName, Balance) LOAN (Branch_name, LoanNo, CustName, Amount) Specify the foreign keys for this schema. EMPLOYEE Fname Minit Lname Ssn Bdate DEPARTMENT Dname Dnumber Mgr_ssn Mgr_start_date DEPT LOCATIONS Dnumber Dlocation PROJECT Pname Pnumber Plocation Dnum Address Sex Salary WORKS ON Essn Pno Hours DEPENDENT Essn Dependent_name Sex Bdate Relationship Super_ssn Dno Figure 3.7 Referential integrity constraints displayed on the COMPANY relational database schema. Figure 3.6 One possible database state for the COMPANY relational database schema. EMPLOYEE Fname Minit Lname Ssn Bdate Address John B Smith 123456789 1965-01-09 731 Fondren, Houston, TX Franklin T Wong 333445555 1955-12-08 638 Voss, Houston, TX Alicia J Zelaya 999887777 1968-01-19 3321 Castle, Spring, TX Jennifer S Wallace 987654321 1941-06-20 291 Berry, Bellaire, TX Ramesh K Narayan 666884444 1962-09-15 975 Fire Oak, Humble, TX Joyce A English 453453453 1972-07-31 5631 Rice, Houston, TX Ahmad V Jabbar 987987987 1969-03-29 980 Dallas, Houston, TX James E Borg 888665555 1937-11-10 450 Stone, Houston, TX DEPARTMENT Dname Research Administration Headquarters Dnumber 5 4 1 Mgr_ssn 333445555 987654321 888665555 Mgr_start_date 1988-05-22 1995-01-01 1981-06-19 Sex Salary Super_ssn Dno M 30000 333445555 M 40000 888665555 F 25000 987654321 4 43000 888665555 F 4 38000 333445555 5 25000 333445555 5 25000 987654321 4 55000 NULL 1 M F M M DEPT_LOCATIONS Dnumber 1 4 5 10 5 5 55 01 Dlocation Houston Stafford Bellaire Sugarland Houston Figure 3.6 One possible database state for the COMPANY relational database schema WORKS ON Essn 123456789 123456789 666884444 453453453 453453453 333445555 333445555 333445555 333445555 999887777 999887777 987987987 987987987 987654321 987654321 888665555 Pno Hours 1 32.5 2 7.5 3 40.0 1 20.0 2 20.0 2 10.0 10.0 10.0 10.0 30 30.0 10 10.0 10 35.0 5.0 20.0 15.0 NULL 3 10 20 30 30 20 20 DEPENDENT Essn 333445555 333445555 333445555 987654321 123456789 123456789 123456789 PROJECT Pname ProductX ProductY ProductZ Computerization Reorganization Newbenefits Dependent_name Alice Theodore Joy Abner Michael Alice Elizabeth Pnumber 1 2 3 10 20 30 Sex F M F M Plocation Bellaire Sugarland Houston Stafford Houston Stafford Dnum 5 5 5 4 1 4 Bdate Relationship 1986-04-05 Daughter 1983-10-25 Son 1958-05-03 Spouse 1942-02-28 Spouse M 1988-01-04 Son F 1988-12-30 Daughter F 1967-05-05 Spouse