Solution:
The process of transaction can guarantee the reliability of business applications. Locking resources is widely used in distributed transaction management (e.g; two phase commit, 2PC) to keep the system consistent. The locking mechanism, however, potentially results in various deadlocks. In service oriented architecture, the deadlock problem becomes even worse because multiple transactions try to lock shared resources in the unexpectable way due to the more randomicity of transaction requests, which has not been solved by existing research results. In this paper, we investigate how to prevent local deadlocks, caused by the resource competition among multiple sub-transactions of a gl obal transaction, and global deadlocks from the competition among different global transactions. We propose a replication based approach to avoid the local deadlocks, and a timestamp based approach to significantly mitigate the global deadlocks. A general algorithm is designed for both local and global deadlock prevention. The experimental results demonstrate the effectiveness and efficiency of our deadlock prevention approach. Further, it is also proved that our approach provides higher system performance than traditional resource allocation schemes.
This is the required answer.
Answer:
a process or set of rules to be followed in calculations or other problem-solving operations, especially by a computer.
Explanation:
Answer:
The correct answer should be: "It is important to reaffirm and test technologies' importance and impact to society in order to reflect upon their benefits or damages to the environment".
Explanation:
Technologies have a major importance in society nowadays, although they also have a great impact in the environment, whether for good or not. The fact is that reviewing and assessing technologies' importance and impact are necessary to test and garantee if they have been developed in an environmental friendly manner or with no worries for natural resources and society. Therefore, any technology must be ethical in terms of improving society with no damages, or as least as possible, to the environment.
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<span>You should do it if C. it will take less than two minutes to complete </span>
