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- In optimistic concurrency control, users do not lock data when they read it. 在乐观并发控制中,用户读取数据时不锁定数据。
- The Results pane uses optimistic concurrency control so the grid shows a copy of the data in the database rather than an entirely live view. 结果窗格使用开放式并发控制,因此网格显示的是数据库中的数据副本而不是完全实时的视图。
- 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。
- With the optimistic concurrency control, it is easier than ever to allow multiple users to access a database at once and then resolve conflicts quickly and easily. 通过开放式并发控制,允许多个用户同时访问数据库以及随后快速方便地解决冲突都比以往更加容易。
- In the protocol, multiversion optimistic concurrency control method was adopted.Technique of multiversion dynamic adjustment of serialization order was used. 协议采用多版木乐观方法,使用多版本动态调整串行次序技术。
- Third, a new optimistic concurrency control algorithm based on dynamic adjustment of execution order using commit space in RTDBSs, called OCC-CS, is introduced and the complexity of this algorithm is analyzed. 提出了基于提交范围(CommitSpace)的OCC-CS算法来实现动态调整执行顺序方法,并对OCC-CS算法进行了复杂度分析。
- Muliversion optimistic concurrency control 多版本乐观并发控制
- multiversion optimistic concurrency control 多版本乐观并发控制
- optimistic concurrency control 积极的并发控制策略
- Allows you to control how SQL statements or stored procedures are created for a data adapter by specifying options for updates, optimistic concurrency, and refreshing the dataset. 通过为更新、开放式并发和刷新数据集指定选项,允许您控制为数据适配器创建SQL语句或存储过程的方式。
- By contrast, users who use optimistic concurrency do not lock a row when reading it. 对比之下,使用开放式并发的用户在读取行时不会锁定该行。
- Optimistic concurrency improves performance because no locking of records is required, and locking of records requires additional server resources. 由于不需要锁定任何记录,开放式并发将会提高性能,因为锁定记录需要更多的服务器资源。
- Because this is not the case in an optimistic concurrency model, connections to the server are free to serve a larger number of clients in less time. 由于在开放式并发模型中并不会这样,所以与服务器的连接可以在较少的时间内为更多的客户端提供服务。
- There is no specific concurrency control mechanism available. 没有可以使用的特定的并发控制机制。
- This capability is often used to include original values in the WHERE clause of an UPDATE statement to check for optimistic concurrency violations. 该功能通常用于在UPDATE语句的WHERE子句中包含初始值,以检查开放式并发冲突。
- In a multiuser environment, there are two models for updating data in a database: optimistic concurrency and pessimistic concurrency. 在多用户环境中,有两种用于更新数据库中数据的模型:开放式并发和保守式并发。设计。
- Another technique for testing for an optimistic concurrency violation is to verify that all the original column values in a row still match those found in the database. 测试是否存在开放式并发冲突的另一种方法是验证某行中的所有原始列值是否仍匹配数据库中的相应值。
- Provides an overview of the different methods of concurrency control. 提供并发控制的不同方法的概述。
- Operations, as not all classes need such a concurrency control mechanism. 操作外面加上锁,因为不是所有类都需要这种并发控制机制。
- Lock and serializability are two important methods for concurrency control. 加锁与可串行化是并发控制中采取的2个主要措施。