Editorial-State of the Transaction

Chopping transactions into pieces is good for performance but may lead to nonserializable executions. Many researchers have reacted to this fact by either inventing new concurrency-control mechanisms, weakening serializability, or both. We adopt a ...

In this paper, we propose to extend transactional memory with transaction communicators, special objects through which concurrent transactions can communicate: changes by one transaction to a communicator can be seen by concurrent transactions before ...

Snapshot Isolation (SI), is a multi-version concurrency control algorithm introduced in [BBGMOO95] and later implemented by Oracle. SI avoids many concurrency errors, and it never delays read-only transactions. However it does not guarantee ...