Consider the following relation :STUDClass43442Age191811106SnameVikasShreyaMeghaRajanRituLet us suppose 'x' is a tuple variable rangingover 'STUD' relation. Following TRCexpression is given:vx(~(x.class = 4) Vx.age < 10)What are the number of tuples that are validaccording to the above TRC query:

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Answered: r the following relation : Age 9 18 11…

Engineering

Computer Science

r the following relation : Age 9 18 11 10 Sname Vikas Shreya Megha Rajan

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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Concept explainers

Requirement Analysis

A process that determines the user expectations for a software product is called requirement analysis. In software engineering, requirement analysis is known as requirement engineering. It involves communication with end-users and stakeholders to determine whether the system or software requirements are validated, conflicts are solved, and key requirements are documented. The first activity of the Software Development Life Cycle (SDLC) is requirement analysis.

Question

Consider the following relation :
STUD
Class
4
3
4
4
2
Age
19
18
11
10
6
Sname
Vikas
Shreya
Megha
Rajan
Ritu
Let us suppose 'x' is a tuple variable ranging
over 'STUD' relation. Following TRC
expression is given:
vx(~(x.class = 4) Vx.age < 10)
What are the number of tuples that are valid
according to the above TRC query:

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