Express these system specifications to logical form and then determine if the system specifications are consistent. “The user has paid the subscription fee, but does not enter a valid password.” “Access is granted whenever the user has paid the subscription fee and enters a valid password.” “Access is denied if the user has not paid the subscription fee.” “If the user has not entered a valid password but has paid the subscription fee, then access is granted.”
Express these system specifications to logical form and then determine if the system specifications are consistent. “The user has paid the subscription fee, but does not enter a valid password.” “Access is granted whenever the user has paid the subscription fee and enters a valid password.” “Access is denied if the user has not paid the subscription fee.” “If the user has not entered a valid password but has paid the subscription fee, then access is granted.”
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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Express these system specifications to logical form and then determine if the system specifications are consistent.
“The user has paid the subscription fee, but does not enter a valid password.”
“Access is granted whenever the user has paid the subscription fee and enters a valid password.”
“Access is denied if the user has not paid the subscription fee.”
“If the user has not entered a valid password but has paid the subscription fee, then access is granted.”
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