摘要:
Database systems are widely used in many fields. As the scale of database systems increases, more firms decide to deploy the database system in a distributed environment for the sake of data integrity fault tolerance. For guaranteeing the consistency of data, database management systems adopt isolation policies. This paper discusses probabilistic models for snapshot isolation of database management system. Snapshot isolation is an effective method to enhance the consistency of database system, although it degrades the system performance where the system has large network latency such as distributed database system. Also, under the failure-prone environment, a restart scheme is considered as one countermeasure. This paper proposes probabilistic models for the dynamics of snapshot isolation of database system and exhibits the optimization of system performance with respect to updating interval of snapshot isolation within the failure-prone environment from the analytical point of view. Numerical experiments are conducted to validate the effectiveness of analytical results by using real traffic data.
摘要:
Welcome to ACM SIGMOD Record's Series of Interviews with distinguished members of the database community. I'm Marianne Winslett and today we're in Snowbird, Utah, site of the 2014 SIGMOD and PODS conference. I have here with me Sudipto Das, who is a researcher at Microsoft and the recipient of the 2013 SIGMOD Jim Gray Doctoral Dissertation Award, which is for his dissertation entitled 'Scalable and Elastic Transactional Data Stores for Cloud Computing Platforms'. Sudipto's PhD is from the University of California Santa Barbara where he worked with Divy Agrawal and Amr El Abbadi.