a) List all employees. Relational Algebra(RA): Tuple Relational Calculus(TRC): Domain Relational Calculus(DRC): (b) List all details of employees who are female. Relational Algebra(RA): Tuple Relational Calculus(TRC): Domain Relational Calculus(DRC):
a) List all employees. Relational Algebra(RA): Tuple Relational Calculus(TRC): Domain Relational Calculus(DRC): (b) List all details of employees who are female. Relational Algebra(RA): Tuple Relational Calculus(TRC): Domain Relational Calculus(DRC):
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
Related questions
Question
(a) List all employees.
Relational Algebra(RA):
Tuple Relational Calculus(TRC):
Domain Relational Calculus(DRC):
(b) List all details of employees who are female.
Relational Algebra(RA):
Tuple Relational Calculus(TRC):
Domain Relational Calculus(DRC):
Transcribed Image Text:6 The following tables form part of a database held in a Relational Database Management System:
Employee
Department (deptNo, deptName, mgrEmpID)
Project
WorksOn
(emplD, fName, IName, address, DOB, sex, position, deptNo)
(projNo, projName, deptNo)
(empID, projNo, hoursWorked)
where Employee
contains employee details and emplD is the key.
Department contains department details and deptNo is the key. mgrEmplD
identifies the employee who is the manager of the department.
There is only one manager for each department.
contains details of the projects in each department and the key is
projNo (no two departments can run the same project).
contains details of the hours worked by employees on each project,
and emplD/projNo form the key.
Project
and
WorksOn
Formulate the following queries in relational algebra, tuple relational calculus, and domain
relational calculus.
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