Concurrency control in business transaction terms usually involves generating and maintaining locks on data stores, such as relational databases.
并发控制在业务事务术语中通常涉及生成和维护数据存储上的锁，例如关系数据库。
In addition to transaction locking, this approach is needed to control the concurrency of applications on a higher level.
除了事务锁定之外，这种方式可以在更高的级别上控制应用程序的并发性。
Concurrency control and logging happens on the level of full documents.
并发控制和日志记录在完整文档级进行。
Instead, we recommend the use of an optimistic locking strategy, delegating responsibility for concurrency control to appropriate application logic.
我们建议采用乐观锁定策略，将并发控制的责任委派给相应的应用程序逻辑。
With optimistic concurrency control, the database manager releases the row or page locks immediately after a read operation.
通过使用乐观并发控制，数据库管理器在完成读操作之后可以立即释放行或页锁。
Concurrency control Supports table and row level locking.
并发控制支持表级和行级锁。
But while synchronization is primarily a concurrency control mechanism, transactions are primarily an exception-handling mechanism.
但是，当同步主要是并发控制的机制时，则事务主要是处理异常的机制。
Specific concurrency control mechanisms vary across commercial SDO implementations and are beyond the scope of this article.
特定的并发控制机制因商业SDO实现而有所不同，但这超出了本文的讨论范围。
It can be argued also that it provides more efficient use of resources in very high concurrency situations since threads are not held open and more complex flow control can be implemented.
可以这样说，异步通信在具有非常高的并发性的场景下可以实现更有效的资源使用，因为线程没有被打开并且可以实现更复杂的流控制。
Moreover, there are many services that do not have concurrency control at all, which may also lead to inconsistent data.
此外，有许多不具备并发控制的服务，这也可能导致不一致的数据。
Each access intent policy defined is an aggregate of a set of properties used to control different aspects of the persistence and concurrency handling involved in dealing with EJB entities.
每个已定义的访问意图策略都是一组属性的集合，用来控制e JB实体的持久性和并发性处理的不同方面。
Optimistic locking is an extremely efficient concurrency control method that guarantees data integrity without placing any physical lock in the database.
乐观锁是一个极其有效的并发性控制方法，它可以确保数据完整性而又无需在数据库中放置任何物理锁。
This feature to implement multiversion concurrency control (MVCC) : when mutations within a transaction are applied, the values are written at the timestamp of their transaction.
该特性实现了多版本并发控制(MVCC)：当使用了事务时，在写入值时需要带上其事务的时间戳。
This concurrency control can greatly reduce timeout situations between readers and writers accessing the same data row.
这种并发性控制可以极大地减少读取程序和写入程序访问相同的数据行时产生的超时情况。
Concurrency control at the application level is necessary in a variety of scenarios, for example.
在许多场景中，应用程序级别上的并发性控制是必要的，例如。
Concurrency control in a distributed environment.
分布式环境中的并发控制。
Before updating the record, we used optimistic concurrency control with the set entity object method.
在更新记录之前，我们通过实体对象方法set使用了乐观并发控制。
ZODB is a robust, multi-user, object-oriented database system capable of storing and managing arbitrarily complex Python objects with transaction support and concurrency control.
ZODB是一个健壮的、多用户的和面向对象的数据库系统，它能够存储和管理任意复杂的Python对象，并支持事务操作和并发控制。
To find the beans that support Optimistic concurrency control, search the weblogic-ejb-jar.xml files for this element.
要查找支持Optimistic并发控制的bean，请搜索weblogic -ejb - jar . xml文件中的此元素。
The EJB container, persistence manager and the relational resource adapter and database work together to control the concurrency.
ejb容器、持久性管理程序、相关资源适配器和数据库将联合起来对并发性(concurrency)进行控制。
A TCS must be capable of organizing and controlling complex business operations including resource recruitment, business function management, concurrency control, and failure recovery.
TCS必须有能力组织并控制复杂业务运作，包括资源募集、业务功能管理、一致性控制，及失败恢复。
DB2 extends its common services, such as optimization, indexing, concurrency control, and utilities, across the traditional relational and XML column data.
DB 2对其涉及传统关系数据和xml列数据的常用服务进行了扩展，例如优化、索引、并行控制和实用工具。
DB2 services such as optimization, indexing, concurrency control, and utilities are extended to support XML data along with the relational data.
优化、编制索引、并行控制之类的DB 2服务和实用程序都可以进行扩展，以支持XML数据以及关系数据。
Answer: Yes, you can supply an optimistic concurrency control (OCC) integer column to a given table, and specify that this column is to be used for OCC in the metadata.
答：有的，可以向给定的表提供一个开放式并发控制(occ)整数列，并指定该列供元数据中的OCC使用。
Concurrency Control and Recovery in Database Systems (see Resources) gives the properties of successful executions, which, if fulfilled, prevent a system from producing inconsistencies.
数据库系统的并发控制和复原(请参阅参考资料)给出了防止系统产生不一致问题的正确操作的属性。
Even though the JDBC DMS provides for data updates and an optimistic concurrency control (OCC) mechanism for update collisions, SDO may not be suited for all Web applications.
即使JDBCDMS提供了数据更新和用于解决更新冲突的optimistic并发控制(occ)机制，SDO也不可能适合所有的Web应用程序。
In a traditional database system, the transaction correctness is implemented through the concurrency control protocol and the recovery mechanism.
传统数据库通过并发控制协议及事务的恢复机制来保证事务的正确性。
The transaction failed to commit due to the failure of optimistic concurrency control in at least one of the resource managers.
该事务没有确认，因为至少一个资源管理器里的乐观并发控制失败。
It also establishes the concurrency control strategy based on creator and event.
提出了加权事件优先策略，较好地实现了并发控制。
Object versioning for optimistic concurrency control.
用于开放式并发控制的对象版本控制。
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