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2. Concurrency control - Wikipedia

   en.wikipedia.org/wiki/Concurrency_control

   Concurrency control mechanisms firstly need to operate correctly, i.e., to maintain each transaction's integrity rules (as related to concurrency; application-specific integrity rule are out of the scope here) while transactions are running concurrently, and thus the integrity of the entire transactional system.

3. Algorithms for Recovery and Isolation Exploiting Semantics

   en.wikipedia.org/wiki/Algorithms_for_Recovery...

   In computer science, Algorithms for Recovery and Isolation Exploiting Semantics, or ARIES, is a recovery algorithm designed to work with a no-force, steal database approach; it is used by IBM Db2, Microsoft SQL Server and many other database systems. [1] IBM Fellow Chandrasekaran Mohan is the primary inventor of the ARIES family of algorithms. [2]

4. Conflict-free replicated data type - Wikipedia

   en.wikipedia.org/wiki/Conflict-free_replicated...

   LWW-Element-Set is similar to 2P-Set in that it consists of an "add set" and a "remove set", with a timestamp for each element. Elements are added to an LWW-Element-Set by inserting the element into the add set, with a timestamp. Elements are removed from the LWW-Element-Set by being added to the remove set, again with a timestamp.

5. Isolation (database systems) - Wikipedia

   en.wikipedia.org/wiki/Isolation_(database_systems)

   A lower isolation level increases the ability of many users to access the same data at the same time, but also increases the number of concurrency effects (such as dirty reads or lost updates) users might encounter. Conversely, a higher isolation level reduces the types of concurrency effects that users may encounter, but requires more system ...

6. Commitment ordering - Wikipedia

   en.wikipedia.org/wiki/Commitment_ordering

   Furthermore: The data managers being CO compliant is a necessary condition for (distributed) serializability in a system meeting conditions 1, 2 above, when the data managers are autonomous, i.e., do not share concurrency control information beyond unmodified messages of atomic commitment protocol.

7. Distributed concurrency control - Wikipedia

   en.wikipedia.org/wiki/Distributed_concurrency...

   The most common distributed concurrency control technique is strong strict two-phase locking (SS2PL, also named rigorousness), which is also a common centralized concurrency control technique. SS2PL provides both the serializability and strictness. Strictness, a special case of recoverability, is utilized for effective recovery from failure.