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Example (3) (System Failure)<br />
{Transfers Amount money from ACC1 to ACC2}<br />
T1: transfer(ACC1,ACC2,Amount)<br />
{Part1: Take money from ACC1}<br />
balance1 := READ(ACC1)<br />
balance1 := balance1 - Amount<br />
WRITE(ACC1, balance1)<br />
balance2 := READ(ACC1)<br />
balance2 := balance2 + Amount<br />
WRITE(ACC2, balance2)<br />
Results in an inconsistent state of data-base.<br />
Systemcrash<br />
Transactions<br />
© 2009 Universität Karlsruhe, System Architecture Group 22
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