Answered step by step
Verified Expert Solution
Question
1 Approved Answer
Which one of the following Tuple Relational Calculus queries is equivalent to this English description? For every project located in 'Dallas, list the project number,
Which one of the following Tuple Relational Calculus queries is equivalent to this English description? For every project located in 'Dallas, list the project number, the controlling department number, and the department manager's first and last name. O { Fname, Lname | PROJECT(D) AND EMPLOYEE() AND p.plocation='Dallas' AND SELECT((DEPARTMENT(D) AND p.Dnum=d.Dnumber AND d. Mgr_ssn=e.Ssn)} O { e.Fname, e.Lname Ep)PROJECT() AND EMPLOYEE(C) AND p.plocation='Dallas' AND (Ed)(DEPARTMENT(d) AND p.Dnum=d.Dnumber AND d. Mgr_ssn=e.Ssn))} O {Fname, Lname|Ep)PROJECT() AND EMPLOYEE() AND Plocation='Dallas' AND (Ed)(DEPARTMENT(d) AND Dnum=Dnumber AND Mgr_ssn=Ssn)) } O { e.Fname, e.Lname (Ep)PROJECT() AND EMPLOYEE() AND p.plocation='Dallas' AND ((Ed)(DEPARTMENT(C) WHERE p.Dnum=d.Dnumber AND d. Mgr_ssn=e. Ssn))}
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started