事务

It addresses disconnection(including disconnection that represents catastrophic failures) and migration and enforces atomicity and isolation criteria of the global tr...

它支持全局事务的迁移、网络的断接(包括可能发生的灾难性断接)并保证全局事务的关键站点子事务的原子性和隔离性。

All locks acquired by statements within a transaction are held for the duration of the transaction, preventing destructive interference including dirty reads, lost updates , and destructive DDL operations from concurrent transactions.

事务内各语句获得的锁在事务执行期内有效，以防止事务间破坏性的相互干扰，例如：脏读取，无效地更新，以及其他并发事务中具有破坏性的 DDL 操作。

Lock Duration 13.3.1.2 锁的持续时间 125 All locks acquired by statements within a transaction are held for the duration of the transaction, preventing destructive interference including dirty reads, lost updates, and destructive DDL operations from concurrent transactions.

事务内各语句获得的锁在事务执行期内有效，以防止事务间破坏性的相互干扰，例如：脏读取，无效地更新，以及其他并发事务中具有破坏性的 DDL 操作。

There are global transactions and local transactions in the grid database.The serializability of global transaction is very important in transaction management.

网格数据库中的事务也存在全局事务和局部事务之分，对全局事务要保证得到正确的执行结果，其串行化是关键。

Firstly, the definition of cooperative transactions is given and the states of them are specified. Secondly, the dependencies among cooperative transactions and those between cooperative transactions and outside environments are specified in terms of states of cooperative transactions. Finally, the serializability correctness criterion for the presented model is specified by state dependencies of cooperative transactions.

首先给出了协同事务的定义，并描述了协同事务的状态，然后从协同事务的状态角度刻画协同事务之间、协同事务与外部环境之间的复杂依赖关系，最后用协同事务的状态依赖描述了可串行化正确性准则。

Global transaction management Global transaction management consists of global serializability, global atomicity and recovery, global deadlock checker, etc. In distributed data resources management, the complexity of local data sources increases the difficulty of global transaction management.

分布数据资源管理中的全局事务管理通过对事务管理的关键问题的分析，针对分布数据资源管理中数据源在事务处理能力中的巨大差异，提出了给每一个局部数据源包装器添加一些事务处理的功能，让包装器针对特定数据源的具体情况完成部分全局子事务的并发控制和恢复管理，使得在全局管理层可以使用二阶段锁进行并发控制和使用二阶段提交进行事务恢复，并使用超时法进行死锁检测，从而达到分数据资源的全局事务管理。

DDMRA only recoveries incorrupted data items by malicious transactions to avoiding re-excution of innocent operations while transaction dependency methods undo-redo all operations of malicious transactions. In BDDMRA, benign blind writes can write bad data items to normal state thus corresponding malicious operations are not necessary to undo-redo and it will speed up recovery process.

DDMRA算法通过仅仅将恶意事务篡改的数据恢复到正常版本而无需全部&撤销-重做&事务中的所有操作从而避免了无辜操作的重复执行；BDDMRA算法分析了存在盲写事务条件下基于数据依赖的恶意事务恢复方案，善意的盲写事务可以将已破坏的数据恢复到正常状态，无需&撤销-重做&相关恶意操作，从而加快了恢复过程。

A new OLAM task/transaction model based on AOR-DAG also presents in this paper, which can describes complex OLAM tasks and transactions, implies the control stream and the data stream.

论文在对OLAM任务的特点和任务类别的分析的基础上，提出了一种新的OLAM任务/事务模型，这个模型通过AOR-DAG图来表示复杂的OLAM任务和事务，其中同时蕴涵了事务的控制流和数据流，是OLAM事务优化和调度的依据。

Several new approaches of transaction management are proposed as follow: A design transaction model is proposed to support the nested transaction structure, resumable execution, the management of flowing transaction, cooperation of transaction with respect to data, and dynamic restructure of the transaction.

该模型支持嵌套的事务结构，长事务的可持续执行，流程化事务的管理，事务间关于数据对象的合作以及事务的动态重构。

Afterwards through the entire audience representative's secret ballot, the selection has produced the human interspace free federation management structure member is the human interspace management group, the group core member name list distinction is as follows: Group leader: Entire unification, authority: Coordinated entire humanity all important business; Military vice-group leader: Yellow Jinlong, authority: Is responsible for entire human all foreign defense business; Lives vice-group leader: Jumbles together, authority: Is responsible to coordinate the humanity to live aspect all business; Produces vice-group leader: White Peter, is responsible to coordinate the human all production activity; Eliminates this is cultural vice-group leader: Black must win, is responsible for the human all culture energetic domain business; Each group is 1000, the prime task assists fellow main members, develops all to serve together the overall humanity's great enterprise!

随后通过全场代表的无记名投票，选取产生了人类星际自由联邦的管理机构成员即人类星际管理小组，小组核心成员名单分别如下：组长：全统一，职权：协调整个人类一切重要事务；军事副组长：黄金龙，职权：负责整个人类一切对外防卫事务；生活副组长：混为一谈，职权：负责协调人类生活方面一切事务；生产副组长：白彼得，负责协调人类一切生产活动；除此就是文化副组长：黑必胜，负责人类一切文化精神领域的事务；各部组员为1000名，主要工作是协助各位主要成员，共同开展一切服务于整体人类的伟大事业！

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。