Many computer systems support race situations. Consider an organization's accounting system in which several individuals have access to an account from which they may deposit or withdraw: deposit(amount) and withdraw (amount). The amount to be deposited or withdrawn from the account balance is provided to these two functions. Assume Mary and Joe are both workers with access to this account. The account currently has a balance of $3000. Explain how a race situation might develop if Mary executes deposit(500) and Joe performs withdraw(300) from the account and what could be done to avoid the race condition from occuring. Display the potential balances with racing conditions and when race conditions are avoided.
Many computer systems support race situations. Consider an organization's accounting system in which several individuals have access to an account from which they may deposit or withdraw: deposit(amount) and withdraw (amount). The amount to be deposited or withdrawn from the account balance is provided to these two functions. Assume Mary and Joe are both workers with access to this account. The account currently has a balance of $3000. Explain how a race situation might develop if Mary executes deposit(500) and Joe performs withdraw(300) from the account and what could be done to avoid the race condition from occuring. Display the potential balances with racing conditions and when race conditions are avoided.
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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Many computer systems support race situations.
Consider an organization's accounting system in which several individuals have access to an account from which they may deposit or withdraw: deposit(amount) and withdraw (amount).
The amount to be deposited or withdrawn from the account balance is provided to these two functions.
Assume Mary and Joe are both workers with access to this account.
The account currently has a balance of $3000.
Explain how a race situation might develop if Mary executes deposit(500) and Joe performs withdraw(300) from the account and what could be done to avoid the race condition from occuring.
Display the potential balances with racing conditions and when race conditions are avoided.
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