Let's say there is only room for one student in a course, and two people are seeking to sign up. What property of a database system makes it impossible for both students to be placed in the last open seat?

Let's say there is only room for one student in a course, and two people are seeking to sign up. What property of a database system makes it impossible for both students to be placed in the last open seat?

Principles of Information Systems (MindTap Course List)

12th Edition

ISBN:9781285867168

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter5: Database Systems And Applications

Section: Chapter Questions

Problem 4PSE: Using a graphics program, develop an entity-relationship diagram for a database application for an...

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Let's say there's only room for one student in a class and two people want to sign up for it. To what property of a database system do both applicants fail to get access, preventing them from taking the last available seat?
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Consider the situation when two students are interested in enrolling in the same class but there is only space for one additional. Why can't they both just get the final seat in the car if there's a database system blocking it?
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Start with a database transaction. We'll look on the bright side when we meet again.
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Here's a situation to mull over: two students are interested in enrolling in the same class, but there's only room for one of them. What is it about a database that makes it so they can't sit together?

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