Relational calculus. Query processing and optimization. Transaction processing: failure, recovery, and concurrency. Database security. Logic-based systems. Parallel ...

Transactional memory systems represent a paradigm shift in concurrent programming by abstracting low-level lock management and enabling sequences of operations to be executed as atomic transactions.

Multiversion concurrency control (MVCC) is a database optimization technique. MVCC creates duplicate copies of records so that data can be safely read and updated at the same time. With MVCC, database ...