Q. Database locking concept is used to solve the problem of

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Q. A lock that allows concurrent transactions to access different rows of the same table is known as a

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Q. A transaction completes its execution is said to be

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Q. A system is in a ______ state if there exists a set of transactions such that every transaction in the set is waiting for another transaction in the set.

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Q. The deadlock state can be changed back to stable state by using _____________ statement.

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Q. What are the ways of dealing with deadlock ?

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Q. When transaction Ti requests a data item currently held by Tj , Ti is allowed to wait only if it has a timestamp smaller than that of Tj (that is, Ti is older than Tj ). Otherwise, Ti is rolled back (dies). This is

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Q. When transaction Ti requests a data item currently held by Tj , Ti is allowed to wait only if it has a timestamp larger than that of Tj (that is, Ti is younger than Tj ). Otherwise, Tj is rolled back (Tj is wounded by Ti ). This is

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Q. The deadlock in a set of transaction can be determined by

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Q. A deadlock exists in the system if and only if the wait-for graph contains a ___________.

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Q. Selecting the victim to be rollbacked to the previous state is determined by the minimum cost. The factors determining cost of rollback is

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Q. __________ rollback requires the system to maintain additional information about the state of all the running transactions.

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Q. Which of these is data type long literal?

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Q. Which of the following occurs when a transaction rereads data and finds new rows that were inserted by a command transaction since the prior read?

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Q. A transaction for which all committed changes are permanent is called:

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Q. In this instance, dirty reads are disallowed, while nonrepeatable reads and phantom reads are allowed.

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Q. Which of the following occurs when a transaction rereads data it has previously read and finds modification or deletions caused by a committed transaction?

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Q. A transaction may not always complete its execution successfully. Such a transaction is termed

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Q. Transaction processing is associated with everything below except

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Q. Transaction management ensures ____________ and __________ properties.

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