Consider the database schema below and answer the questions that follow using SQL.EMPLOYEE-EmpID Firstname. Lastname. Hows worked. Salary,SupervisorlID DepartmentlID)DEPENDANT->RependantID Firstname. Lastname. Age EmpID)SUPERVISOR->($upervisorID.Firstname. Lastname Address)DEPARTMENT->(RepartmentID departmentname)Retrieve all employees in "sales department" whose salary is between Ksh 30,000and Ksh 80,000.Retrieve the names of all employees in “marketing department" who work more thani.ii.10 hours and are supervisedd by "Fredrick Khamati".List the names of all employees who have a dependent with the same first name as111.themselves.iv.Retrieve all supervisors whose address is in "Nanyuki".For each department, retrieve the departmentlID. the number of employees in theV.department, and their average salary.Using a stored procedure.increase employee salary by 3% if his/her salary is belowV1.

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i. Retrieve all employees in "sales department" whose salary is between Ksh 30,000 and Ksh 80,000.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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