Referential integrity constraints displayed on the COMPANY relational database schema. ΕMPLOYEΕ Fname Minit Lname Ssn Bdate Address Sex Salary Super ssn Dno DEPARTMENT Dname Dnumber Mgr_ssn Mgr_start_date DEPT_LOCATIONS Dnumber Dlocation PROJECT Pname Pnumber Plocation Dnum WORKS_ON Essn Pno Hours DEPENDENT Essn Dependent_name Sex Bdate Relationship

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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and execute the following queries in relational algebra (RA) using the RA interpreter on the COMPANY database schema.List the names of all employees in department 5 who work more than 10 hours per week on the ProductX project.

  1. List the names of employees who are directly supervised by Franklin Wong.
  2. List the names of employees who work on at least one project in Dallas but the department has no location in Dallas.
  3. List the names of employees who work on every project.
    please answer them in a very clean and clear so I can read it and understand it

 

Write precise and direct query.

Referential integrity constraints displayed on the COMPANY relational database schema.
ΕMPLOYEΕ
Fname Minit Lname Ssn Bdate
Address
Sex Salary
Super ssn
Dno
DEPARTMENT
Dname Dnumber Mgr_ssn Mgr_start_date
DEPT_LOCATIONS
Dnumber
Dlocation
PROJECT
Pname Pnumber Plocation
Dnum
WORKS_ON
Essn
Pno
Hours
DEPENDENT
Essn
Dependent_name
Sex
Bdate
Relationship
Transcribed Image Text:Referential integrity constraints displayed on the COMPANY relational database schema. ΕMPLOYEΕ Fname Minit Lname Ssn Bdate Address Sex Salary Super ssn Dno DEPARTMENT Dname Dnumber Mgr_ssn Mgr_start_date DEPT_LOCATIONS Dnumber Dlocation PROJECT Pname Pnumber Plocation Dnum WORKS_ON Essn Pno Hours DEPENDENT Essn Dependent_name Sex Bdate Relationship
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