ID 1001 1002 1003 1004 1005 1006 Employee Employee Name Salary ename Eman Ali Moosa innan Hessa Alaa Mariam m sal 550 600 900 300 600 800 Employee Phone Number empno 39999999 39999998 39999997 39999996 39999995 39999994 Emp job Developer CS HR Network Server SE Department number deptno 10 20 40 30 30 10 Department name dname IT Registration Admin Date of hiering hiredare 3/3/2000 3/4/2000 3/5/2000 Engineering 3/6/2000 Engineering 3/7/2000 IT 3/8/2000 From the above table, Answer the questions: Q1) Write a query that count the employees in each department? Q2) Write a query that retrieve all employees information who are in 'Hessa' department? Q3) Write a query that find the number of the employees in each department which salaries total greater than or equal the salaries total of department 30? Q4) Modify the information for the employee whose ID 1004, change the job to Writer? Q5) Delete the employees data who have same salary of the employee has ID is 1002? Q6) Write query that display ID, ename, sal, deptno, dname, hiredate for all employees.

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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Course: Database systems: design and application

Kindly answer Q3,5,6

Employee Employee
Name
Salary
ID
1001
1002
1003
1004
1005
Alaa
1006 Mariam
ename
mmmm
Eman
Ali
Moosa
Hessa
www
sal
550
600
900
300
600
800
Employee
Phone
Number
empno
wwwwww
39999999
Emp
job
Developer
CS
39999998
39999997
HR
39999996 Network
39999995
Server
39999994
SE
Department
number
deptno
10
20
40
30
30
10
Department
name
dname
IT
Registration
Admin
Date of
hiering
hiredare
3/3/2000
3/4/2000
3/5/2000
Engineering 3/6/2000
Engineering
3/7/2000
IT
3/8/2000
From the above table, Answer the questions:
Q1) Write a query that count the employees in each department?
Q2) Write a query that retrieve all employees information who are in 'Hessa' department?
Q3) Write a query that find the number of the employees in each department which salaries
total greater than or equal the salaries total of department 30?
Q4) Modify the information for the employee whose ID 1004, change the job to Writer?
Q5) Delete the employees data who have same salary of the employee has ID is 1002?
Q6) Write query that display ID, ename, sal, deptno, dname, hiredate for all
employees.
Transcribed Image Text:Employee Employee Name Salary ID 1001 1002 1003 1004 1005 Alaa 1006 Mariam ename mmmm Eman Ali Moosa Hessa www sal 550 600 900 300 600 800 Employee Phone Number empno wwwwww 39999999 Emp job Developer CS 39999998 39999997 HR 39999996 Network 39999995 Server 39999994 SE Department number deptno 10 20 40 30 30 10 Department name dname IT Registration Admin Date of hiering hiredare 3/3/2000 3/4/2000 3/5/2000 Engineering 3/6/2000 Engineering 3/7/2000 IT 3/8/2000 From the above table, Answer the questions: Q1) Write a query that count the employees in each department? Q2) Write a query that retrieve all employees information who are in 'Hessa' department? Q3) Write a query that find the number of the employees in each department which salaries total greater than or equal the salaries total of department 30? Q4) Modify the information for the employee whose ID 1004, change the job to Writer? Q5) Delete the employees data who have same salary of the employee has ID is 1002? Q6) Write query that display ID, ename, sal, deptno, dname, hiredate for all employees.
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