Maurice Tutor

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About Maurice Tutor

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Expertise:
Algebra,Applied Sciences See all
Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 2 Days Ago
Questions Answered: 66690
Tutorials Posted: 66688

Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 15 Sep 2017 My Price 4.00

SSN in EMPLOYEE table

EMPLOYEE(NAME, SSN, BDATE, ADDRESS, SALARY)

DEPARTMENT(DNAME, DNUMBER, MGRSSN)

(MGRSSN references SSN in EMPLOYEE table)

WORKSIN(ESSN, DNUMBER, HOURS)

(DNUMBER references DNUMBER in DEPARTMENT table)

(ESSN reference SSN in EMPLOYEE table)

Write the relational algebra expressions for the following queries:

1) List the names of employees whose salary is greater than 30000

2) List the names of employees who work in A????1shoesA????1 department

3) List the names of employees who work in all departments

 
 

Answers

Maurice Tutor
(5)
Status NEW Posted 15 Sep 2017 01:09 PM My Price 4.00

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