Using data from the BITS database, define a view named TopLevelClient. It consists of the number, name,address, balance, and credit limit of all clients with credit limits that are greater than or equal to $10,000.a. Using SQL, write the view definition for TopLevelClient.b. Write an SQL query to retrieve the number and name of all clients as well as the difference between theircredit limit and balance in the TopLevelClient view.c. Convert the query you wrote in Question 2b to the query that the DBMS will actually execute.

Write a SQL script that performs the following. Creates an updatable view based on the employee table. The view must contain the following features Rename all of the columns Display all "manager" records Insert 5 new records into the base table (using the view) Display all the view records using the base table (to verify that the view performed the inserts)

Given the table PRODUCT(ProductID, ProductName, ProductClass, ProductWeight, ProductStyle, ProductColor, ProductPrice). Note: ProductWeight and ProductPrice are numeric fields, and the other attributes are character fields, i.e., store text. Write a SQL query to retrieve all details of products whose name is "Watermelon" and whose color is "green".

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)