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1. 发明授权

US07089253B2 Computer method and system for concurrency control using dynamic serialization ordering 失效
标题翻译：使用动态序列化排序的并发控制的计算机方法和系统
公开(公告)号：US07089253B2
公开(公告)日：2006-08-08
申请号：US10653455
申请日：2003-09-02
申请人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
发明人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
IPC分类号： G06F17/30
CPC分类号： G06F17/30348 , Y10S707/99938 , Y10S707/99942
摘要： A mechanism controls concurrency among database transactions through the use of serial ordering relations. The ordering relations are computed dynamically in response to patterns of use. An embodiment of the present invention serializes a transaction that accesses a resource before a transaction that modifies the resource, even if the accessor starts after the modifier starts or commits after the modifier commits. A method of concurrency control for a database transaction in a distributed database system stores an intended use of a database system resource by the database transaction in a serialization graph. A serialization ordering is asserted between the database transaction and other database transactions based on the intended use of the database system resource by the database transaction. The serialization ordering is then communicated to a node in the distributed database system that needs to know the serialization ordering to perform concurrency control. Cycles in the serialization graph are detected based on the asserted serialization order and in order to break such cycles and ensure transaction serializability a database transaction is identified that is a member of a cycle in the serialization graph.
摘要翻译：一种机制通过使用串行排序关系来控制数据库事务之间的并发性。排序关系是根据使用模式动态计算的。本发明的一个实施例即使在修改器开始之后启动或在修饰符提交之后提交时，序列化在修改资源的事务之前访问资源的事务。分布式数据库系统中的数据库事务的并发控制方法通过数据库事务在序列化图中存储数据库系统资源的预期用途。基于数据库事务对数据库系统资源的预期用途，在数据库事务和其他数据库事务之间断言序列化排序。然后将序列化顺序传送到分布式数据库系统中需要知道串行化排序以执行并发控制的节点。序列化图中的循环根据断言的序列化顺序进行检测，为了打破这样的循环，并确保事务序列化，数据库事务被识别为序列化图中循环的成员。

2. 发明授权

US07305386B2 Controlling visibility in multi-version database systems 失效
标题翻译：控制多版本数据库系统中的可见性
公开(公告)号：US07305386B2
公开(公告)日：2007-12-04
申请号：US10646522
申请日：2003-08-22
申请人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
发明人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
IPC分类号： G06F17/30 , G06F7/00
CPC分类号： G06F17/30356 , Y10S707/99934 , Y10S707/99943 , Y10S707/99953
摘要： A multi-version database system controls visibility of data during transaction processing. A transaction includes a transaction identifier that identifies the transaction and an invisibility list of transactions whose effects are invisible to the transaction. Changes made by other transactions are visible to the transaction based on the isolation level of the transaction. Records are visible to a transaction based on a creator identifier stored in the record that identifies the transaction that created the record.
摘要翻译：多版本数据库系统在事务处理期间控制数据的可见性。交易包括识别交易的交易标识符和其交易不可见的交易的不可见性列表。根据事务的隔离级别，其他事务所做的更改对事务是可见的。根据存储在记录中的标识创建记录的事务的创建者标识，事务可以看到记录。

3. 发明授权

US07146366B2 Distributed concurrency control using serialization ordering 有权
标题翻译：使用串行化排序的分布式并发控制
公开(公告)号：US07146366B2
公开(公告)日：2006-12-05
申请号：US10653453
申请日：2003-09-02
申请人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
发明人： Foster D. Hinshaw , Craig S. Harris , Sunil K. Sarin
IPC分类号： G06F17/30
CPC分类号： G06F17/30348 , Y10S707/99938 , Y10S707/99942
摘要： A mechanism controls concurrency among database transactions through the use of serial ordering relations. The ordering relations are computed dynamically in response to patterns of use. An embodiment of the present invention serializes a transaction that accesses a resource before a transaction that modifies the resource, even if the accessor starts after the modifier starts or commits after the modifier commits. A method of concurrency control for a database transaction in a distributed database system stores an intended use of a database system resource by the database transaction in a serialization graph. A serialization ordering is asserted between the database transaction and other database transactions based on the intended use of the database system resource by the database transaction. The serialization ordering is then communicated to a node in the distributed database system that needs to know the serialization ordering to perform concurrency control. Cycles in the serialization graph are detected based on the asserted serialization order and in order to break such cycles and ensure transaction serializability a database transaction is identified that is a member of a cycle in the serialization graph.
摘要翻译：一种机制通过使用串行排序关系来控制数据库事务之间的并发性。排序关系是根据使用模式动态计算的。本发明的一个实施例即使在修改器开始之后启动或在修饰符提交之后提交时，序列化在修改资源的事务之前访问资源的事务。分布式数据库系统中的数据库事务的并发控制方法通过数据库事务在序列化图中存储数据库系统资源的预期用途。基于数据库事务对数据库系统资源的预期用途，在数据库事务和其他数据库事务之间断言序列化排序。然后将序列化顺序传送到分布式数据库系统中需要知道串行化排序以执行并发控制的节点。序列化图中的循环根据断言的序列化顺序进行检测，为了打破这样的循环，并确保事务序列化，数据库事务被识别为序列化图中循环的成员。

4. 发明授权

US6003011A Workflow management system wherein ad-hoc process instances can be generalized 失效
标题翻译：工作流管理系统，其中可以推广特定过程实例
公开(公告)号：US6003011A
公开(公告)日：1999-12-14
申请号：US003701
申请日：1998-01-07
申请人： Sunil K. Sarin , Alexis Layton
发明人： Sunil K. Sarin , Alexis Layton
IPC分类号： G06Q10/04 , G06Q10/06 , G06F17/60
CPC分类号： G06Q10/04 , G06Q10/0631 , G06Q10/06311 , G06Q10/06316
摘要： In workflow management software, task objects describing a successfully-completed workflow process instance are copied. The copied task objects are then generalized in the relevant variables thereof, so that the entire workflow process is thus generalized for direct re-use in an amended workflow process definition. In this way, ad-hoc amendments to the workflow process, such as those initiated by the persons who collaborate in the work process, can be easily incorporated into a new work process.
摘要翻译：在工作流管理软件中，复制了描述成功完成的工作流流程实例的任务对象。复制的任务对象然后在其相关变量中被概括，使得整个工作流程因此被概括为在修改的工作流程定义中的直接重用。这样，工作流程的特别修改，例如在工作流程中合作的人员发起的工作流程，可以轻松地纳入新的工作流程。

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