Below are two examples of concurrent transactions. Select the type of conflict, if any, executed by...
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Below are two examples of concurrent transactions. Select the type of conflict, if any, executed by each transaction. Example 1 Example 2 T read all accounts compute sum of all accounts read each account reduce each account by 0.6% of the sum write each account commit T Pick T Pick T read account D increase account D by $2,000 write account D commit T read accounts A through J read accounts K through Z compute average of account size read all accounts add 30% of average to each account write each account commit T Pick T Pick 2 T2 delete account D commit Below are two examples of concurrent transactions. Select the type of conflict, if any, executed by each transaction. Example 1 Example 2 T read all accounts compute sum of all accounts read each account reduce each account by 0.6% of the sum write each account commit T Pick T Pick T read account D increase account D by $2,000 write account D commit T read accounts A through J read accounts K through Z compute average of account size read all accounts add 30% of average to each account write each account commit T Pick T Pick 2 T2 delete account D commit
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In Example 1 T1 reads all accounts and then T2 computes the sum of all accounts This is not a confli... View the full answer
Related Book For
Income Tax Fundamentals 2013
ISBN: 9781285586618
31st Edition
Authors: Gerald E. Whittenburg, Martha Altus Buller, Steven L Gill
Posted Date:
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