Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Commitment_ordering> ?p ?o }
- Commitment_ordering abstract "Commitment ordering (CO) is a class of interoperable serializability techniques in concurrency control of databases, transaction processing, and related applications. It allows optimistic (non-blocking) implementations. With the proliferation of multi-core processors, CO has been also increasingly utilized in concurrent programming, transactional memory, and especially in software transactional memory (STM) for achieving serializability optimistically. CO is also the name of the resulting transaction schedule (history) property, which was originally defined in 1988 with the name dynamic atomicity. In a CO compliant schedule the chronological order of commitment events of transactions is compatible with the precedence order of the respective transactions. CO is a broad special case of conflict serializability, and effective means (reliable, high-performance, distributed, and scalable) to achieve global serializability (modular serializability) across any collection of database systems that possibly use different concurrency control mechanisms (CO also makes each system serializability compliant, if not already).Each not-CO-compliant database system is augmented with a CO component (the commitment order coordinator—COCO) which orders the commitment events for CO compliance, with neither data-access nor any other transaction operation interference. As such CO provides a low overhead, general solution for global serializability (and distributed serializability), instrumental for global concurrency control (and distributed concurrency control) of multi database systems and other transactional objects, possibly highly distributed (e.g., within cloud computing, grid computing, and networks of smartphones). An atomic commitment protocol (ACP; of any type) is a fundamental part of the solution, utilized to break global cycles in the conflict (precedence, serializability) graph. CO is the most general property (a necessary condition) that guarantees global serializability, if the database systems involved do not share concurrency control information beyond atomic commitment protocol (unmodified) messages, and have no knowledge whether transactions are global or local (the database systems are autonomous). Thus CO (with its variants) is the only general technique that does not require the typically costly distribution of local concurrency control information (e.g., local precedence relations, locks, timestamps, or tickets). It generalizes the popular strong strict two-phase locking (SS2PL) property, which in conjunction with the two-phase commit protocol (2PC) is the de facto standard to achieve global serializability across (SS2PL based) database systems. As a result CO compliant database systems (with any, different concurrency control types) can transparently join such SS2PL based solutions for global serializability.In addition, locking based global deadlocks are resolved automatically in a CO based multi-database environment, an important side-benefit (including the special case of a completely SS2PL based environment; a previously unnoticed fact for SS2PL).Furthermore, strict commitment ordering (SCO; Raz 1991c), the intersection of Strictness and CO, provides better performance (shorter average transaction completion time and resulting better transaction throughput) than SS2PL whenever read-write conflicts are present (identical blocking behavior for write-read and write-write conflicts; comparable locking overhead). The advantage of SCO is especially significant during lock contention. Strictness allows both SS2PL and SCO to use the same effective database recovery mechanisms.Two major generalizing variants of CO exist, extended CO (ECO; Raz 1993a) and multi-version CO (MVCO; Raz 1993b). They as well provide global serializability without local concurrency control information distribution, can be combined with any relevant concurrency control, and allow optimistic (non-blocking) implementations. Both use additional information for relaxing CO constraints and achieving better concurrency and performance. Vote ordering (VO or Generalized CO (GCO); Raz 2009) is a container schedule set (property) and technique for CO and all its variants. Local VO is a necessary condition for guaranteeing global serializability, if the atomic commitment protocol (ACP) participants do not share concurrency control information (have the generalized autonomy property). CO and its variants inter-operate transparently, guaranteeing global serializability and automatic global deadlock resolution also together in a mixed, heterogeneous environment with different variants.".
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- Commitment_ordering wikiPageExternalLink the_principle_of_co.
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- Commitment_ordering wikiPageRevisionID "683747226".
- Commitment_ordering wikiPageWikiLink Atomic_commitment.
- Commitment_ordering wikiPageWikiLink Atomic_commitment_protocol.
- Commitment_ordering wikiPageWikiLink Category:Concurrency_control.
- Commitment_ordering wikiPageWikiLink Category:Data_management.
- Commitment_ordering wikiPageWikiLink Category:Databases.
- Commitment_ordering wikiPageWikiLink Category:Distributed_algorithms.
- Commitment_ordering wikiPageWikiLink Category:Transaction_processing.
- Commitment_ordering wikiPageWikiLink Cloud_computing.
- Commitment_ordering wikiPageWikiLink Commitment_ordering.
- Commitment_ordering wikiPageWikiLink Commutative_property.
- Commitment_ordering wikiPageWikiLink Concurrency_control.
- Commitment_ordering wikiPageWikiLink Concurrent_computing.
- Commitment_ordering wikiPageWikiLink Cycle_(graph_theory).
- Commitment_ordering wikiPageWikiLink Database.
- Commitment_ordering wikiPageWikiLink Database_transaction.
- Commitment_ordering wikiPageWikiLink De_facto_standard.
- Commitment_ordering wikiPageWikiLink Deadlock.
- Commitment_ordering wikiPageWikiLink Digital_Equipment_Corporation.
- Commitment_ordering wikiPageWikiLink Directed_graph.
- Commitment_ordering wikiPageWikiLink Distributed_computing.
- Commitment_ordering wikiPageWikiLink Distributed_concurrency_control.
- Commitment_ordering wikiPageWikiLink Distributed_database.
- Commitment_ordering wikiPageWikiLink Distributed_lock_manager.
- Commitment_ordering wikiPageWikiLink Distributed_system.
- Commitment_ordering wikiPageWikiLink Distributed_transaction.
- Commitment_ordering wikiPageWikiLink Embedding.
- Commitment_ordering wikiPageWikiLink Federated_database_system.
- Commitment_ordering wikiPageWikiLink File:SCO-VS-SS2PL.jpg.
- Commitment_ordering wikiPageWikiLink Global_concurrency_control.
- Commitment_ordering wikiPageWikiLink Global_serializability.
- Commitment_ordering wikiPageWikiLink Grid_computing.
- Commitment_ordering wikiPageWikiLink Heuristic_(computer_science).
- Commitment_ordering wikiPageWikiLink Heuristic_algorithm.
- Commitment_ordering wikiPageWikiLink If_and_only_if.
- Commitment_ordering wikiPageWikiLink Integrated_circuit.
- Commitment_ordering wikiPageWikiLink Interface_(computer_science).
- Commitment_ordering wikiPageWikiLink Interface_(computing).
- Commitment_ordering wikiPageWikiLink International_standard.
- Commitment_ordering wikiPageWikiLink Invention.
- Commitment_ordering wikiPageWikiLink Latency_(engineering).
- Commitment_ordering wikiPageWikiLink Lock_(computer_science).
- Commitment_ordering wikiPageWikiLink Locks_with_ordered_sharing.
- Commitment_ordering wikiPageWikiLink Max-flow_min-cut_theorem.
- Commitment_ordering wikiPageWikiLink Max_flow_in_networks.
- Commitment_ordering wikiPageWikiLink Mediator_pattern.
- Commitment_ordering wikiPageWikiLink Michael_Stonebraker.
- Commitment_ordering wikiPageWikiLink Multi-core_processor.
- Commitment_ordering wikiPageWikiLink Multiversion_concurrency_control.
- Commitment_ordering wikiPageWikiLink Necessary_and_sufficient_condition.
- Commitment_ordering wikiPageWikiLink Necessary_condition.
- Commitment_ordering wikiPageWikiLink Necessity_and_sufficiency.
- Commitment_ordering wikiPageWikiLink Noncommutative.
- Commitment_ordering wikiPageWikiLink Open_problem.
- Commitment_ordering wikiPageWikiLink Optimistic_concurrency_control.
- Commitment_ordering wikiPageWikiLink Partial_order.
- Commitment_ordering wikiPageWikiLink Partially_ordered_set.
- Commitment_ordering wikiPageWikiLink Precedence_graph.
- Commitment_ordering wikiPageWikiLink Proper_subset.
- Commitment_ordering wikiPageWikiLink Real-time_computing.
- Commitment_ordering wikiPageWikiLink Reliability_engineering.
- Commitment_ordering wikiPageWikiLink Scalability.
- Commitment_ordering wikiPageWikiLink Schedule_(computer_science).
- Commitment_ordering wikiPageWikiLink Serializability.
- Commitment_ordering wikiPageWikiLink Service_(systems_architecture).
- Commitment_ordering wikiPageWikiLink Shared_nothing_architecture.
- Commitment_ordering wikiPageWikiLink Smartphone.
- Commitment_ordering wikiPageWikiLink Snapshot_isolation.
- Commitment_ordering wikiPageWikiLink Software_architecture.
- Commitment_ordering wikiPageWikiLink Software_transactional_memory.
- Commitment_ordering wikiPageWikiLink Subset.
- Commitment_ordering wikiPageWikiLink Sufficient_condition.
- Commitment_ordering wikiPageWikiLink The_History_of_Commitment_Ordering.
- Commitment_ordering wikiPageWikiLink Theorem.
- Commitment_ordering wikiPageWikiLink Thrashing_(computer_science).
- Commitment_ordering wikiPageWikiLink Thread_(computer_science).
- Commitment_ordering wikiPageWikiLink Thread_(computing).
- Commitment_ordering wikiPageWikiLink Throughput.
- Commitment_ordering wikiPageWikiLink Timeout_(computing).
- Commitment_ordering wikiPageWikiLink Timeout_(telecommunication).
- Commitment_ordering wikiPageWikiLink Timestamp-based_concurrency_control.
- Commitment_ordering wikiPageWikiLink Transaction_processing.
- Commitment_ordering wikiPageWikiLink Transactional_memory.
- Commitment_ordering wikiPageWikiLink Transactional_object.
- Commitment_ordering wikiPageWikiLink Transactional_processes.
- Commitment_ordering wikiPageWikiLink Transitive_relation.
- Commitment_ordering wikiPageWikiLink Two-phase_commit_protocol.
- Commitment_ordering wikiPageWikiLink Two-phase_locking.
- Commitment_ordering wikiPageWikiLink Two_phase_commit.
- Commitment_ordering wikiPageWikiLink Two_phase_locking.