Database Recovery and Transaction Scheduling Quiz

To test if a schedule is conflict serializable.

A schedule is conflict serializable if it can transform into a serial schedule after swapping nonconflicting operations.

Both operations belong to separate transactions and involve the same data item.

<p>Precedence graphs are used to illustrate the order of operations between transactions.</p> Signup and view all the answers

<p>The edge Ti -&gt; Tj is created when Ti writes to a data item before Tj reads from it.</p> Signup and view all the answers

<p>A serializable schedule ensures that the result is the same as if the transactions were executed in a serial manner.</p> Signup and view all the answers

<p>If all instructions of Ti are executed before the first instruction of Tj in the schedule.</p> Signup and view all the answers

<p>Two schedules are said to be conflict equivalent if they contain the same set of transactions and if each pair of conflict operations are ordered in the same way.</p> Signup and view all the answers

<p>A serial schedule is a schedule in which all operations of one transaction are performed before starting any operation of another transaction.</p> Signup and view all the answers

<p>A schedule can be transformed into a serial schedule by ensuring that all operations of one transaction are performed before starting any operation of another transaction.</p> Signup and view all the answers

<p>Two schedules are conflict equivalent if they contain the same set of transactions and if each pair of conflict operations are ordered in the same way.</p> Signup and view all the answers

<p>Conflict serializability refers to the property of a schedule being equivalent to a serial schedule after swapping non-conflicting operations.</p> Signup and view all the answers

<p>Execute all the operations of T1 followed by all the operations of T2 OR execute all the operations of T2 followed by all the operations of T1.</p> Signup and view all the answers

<p>A type of schedule where one transaction is executed completely before starting another transaction.</p> Signup and view all the answers

<p>Two schedules are non-conflict equivalent if they do not contain the same set of transactions or if the order of conflict operations is not the same.</p> Signup and view all the answers

<p>A schedule where interleaving of operations is allowed, resulting in many possible orders in which the system can execute individual operations of the transactions.</p> Signup and view all the answers

<p>The database recovery module will select one of the two operations: re-start the transaction or kill the transaction.</p> Signup and view all the answers

<p>Transaction scheduling involves arranging a series of operations from one transaction to another to ensure proper execution order.</p> Signup and view all the answers

<p>To find non-serial schedules that allow transactions to execute concurrently without interfering with one another.</p> Signup and view all the answers