Consider the following schema and write SQL query for given statements. Student ( regNo, sName, sCity, sCGPA, sAge) Course ( cCode, cName, credit_hours) Enrollment (regNo, cCode, semester,quality_points,Grade)   1- Display 2nd row of Student table using Cursors.   2- Display all records of Enrollment table which are placed at even rows.   3- Execute given query in SQL and do as directed. a) UPDATE STUDENT SET ECITY = ‘ISB’ WHERE EID>101 b) Count how many records have been updated in above query using cursor.

(b) Consider the schema of Customer table and write SQL statements for the following queries. cid sname address age occupation salary Payment mode gender 123 sam xacoas 31 manager 60000 cash 124 david flaca 38 administrator 45000 credit i. Write the SQL code to list details of clients in descending order of the salary. ii. Write the SQL code to show details of clients whosere salary is greater than Rs 45000 and age is between 35 and 45.

Computer Science provide SQL code (Use the EBOOKS database) When a course is offered in several sections taught by more than one instructor, students have the ability to choose an instructor, otherwise they have no choice. The deans of each college would like to know how many courses have only one section in the schedule, how many courses have more than 1 section, but taught by the same instructor, how many courses have sections taught by more than one instructor. Sort the results alphabetically by College ID as shown below: COLLEGE SINGLE_SECTION MULTISECTION_ONE_INSTRUCTOR MULTIPLE_INSTRUCTORS CAS 83 21 22 CED 76 8 39 COB 72 16 13

Assume the e-commercial database shown in the Appendix. Write the following queries in (a) relational algebra and (b) SQL. State your assumptions if the semantics is not clear. 1) Find the names of all students who have taken courses in both the Computer Science and Mathematics departments. APPENDIX - You may detach this page from the exam: STUDENTS(student id, first_name, last _name, email, major_code, class_year) COURSES(course id, course_name, course_description, credits, department_code) ENROLLMENTS(student id, course id, semester, grade) MAJORS(major code, major_name, department_code) DEPARTMENTS(department code, department_name)