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Verify that the program segment S: if x <0 then x:= 0 is correct with respect to the initial assertion T and the final assertion x≥0. Note: S is a conditional program segment. Therefore you must prove two statements: Step 1: Prove: (T∧(x <0)){S}(x≥0) Step 2: Prove: (T∧¬(x <0)→(x≥0) SHOW ALL WORK. Must prove each step by solving the equation and showing that it works.

Verify that the program segment S: if x <0 then x:= 0 is correct with respect to the initial assertion T and the final assertion x≥0. Note: S is a conditional program segment. Therefore you must prove two statements: Step 1: Prove: (T∧(x <0)){S}(x≥0) Step 2: Prove: (T∧¬(x <0)→(x≥0) SHOW ALL WORK. Must prove each step by solving the equation and showing that it works.

Database System Concepts
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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Verify that the program segment S: if x <0 then x:= 0 is correct with respect to the initial assertion T and the final assertion x≥0.

Note: S is a conditional program segment. Therefore you must prove two statements:

Step 1: Prove: (T∧(x <0)){S}(x≥0)

Step 2: Prove: (T∧¬(x <0)→(x≥0)

SHOW ALL WORK. Must prove each step by solving the equation and showing that it works.

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