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31. 发明授权

US07941408B2 System, structure, interface, and semantics for implementing row versions: accessing past versions of a data item 有权
标题翻译：用于实现行版本的系统，结构，接口和语义：访问数据项的过去版本
公开(公告)号：US07941408B2
公开(公告)日：2011-05-10
申请号：US10934079
申请日：2004-09-03
申请人： Bipul Sinha , Vivekanandhan Raja , Amit Ganesh , Kenneth R. Jacobs
发明人： Bipul Sinha , Vivekanandhan Raja , Amit Ganesh , Kenneth R. Jacobs
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30309
摘要： Disclosed is a mechanism, system, interface, and process to allow specification of a new table decoration clause to obtain one or more past version of one or more data items. The version query provides for a direct interface to get multiple versions of the row(s). In addition, information about the past versions can be retrieved and displayed along with the past versions. Also disclosed are algorithms, mechanisms, and processes that are employed to implement a query upon past versions. In one approach, the version query can be defined as either “rowid”-based access or non-rowid based access. With rowid based access, a given rowid is used to identify the data for which past versions are desired. Also disclosed is a process for determining one or more life intervals when given a key.
摘要翻译：公开了允许指定新的表装饰子句以获得一个或多个数据项的一个或多个过去版本的机制，系统，接口和过程。版本查询提供了一个直接接口来获取多个版本的行。此外，可以检索和显示过去版本的信息以及过去的版本。还公开了用于在过去版本上实现查询的算法，机制和过程。在一种方法中，版本查询可以被定义为基于“rowid”的访问或基于非rowid的访问。使用基于rowid的访问，给定的rowid用于标识需要过去版本的数据。还公开了当给予钥匙时确定一个或多个生命间隔的过程。

32. 发明授权

US07752181B2 System and method for performing a data uniqueness check in a sorted data set 有权
标题翻译：用于在排序数据集中执行数据唯一性检查的系统和方法
公开(公告)号：US07752181B2
公开(公告)日：2010-07-06
申请号：US10984113
申请日：2004-11-08
申请人： Jonathan Klein , Bipul Sinha , Amit Ganesh
发明人： Jonathan Klein , Bipul Sinha , Amit Ganesh
IPC分类号： G06F17/30
CPC分类号： G06F17/30312 , G06F17/30371
摘要： Embodiments of the present invention include a method for performing a data uniqueness check in a set of sorted data blocks comprising accessing data to be inserted into the set of sorted data blocks, determining a proper data block of the set of sorted data blocks for which the data to be inserted should be located based on a first sorting key. The method further includes examining the proper data block for an existing data entry and if the proper data block is empty, the method further includes inserting the data to be inserted into the proper data block of the set of sorted data blocks.
摘要翻译：本发明的实施例包括一种用于在一组分类数据块中执行数据唯一性检查的方法，包括访问要插入到该排序数据块集合中的数据，确定该排序数据块集合中的适当数据块，应插入的数据应基于第一个排序键来定位。该方法还包括检查现有数据条目的正确数据块，如果正确的数据块为空，则该方法还包括将要插入的数据插入到该排序数据块集合的正确数据块中。

33. 发明申请

US20080183686A1 Apparatus to selectively remove the effects of transactions in online database and enable logical recovery 有权
标题翻译：用于选择性地消除在线数据库中事务的影响并启用逻辑恢复的装置
公开(公告)号：US20080183686A1
公开(公告)日：2008-07-31
申请号：US11699689
申请日：2007-01-29
申请人： Manosiz Bhattacharyya , Bipul Sinha , Amit Ganesh
发明人： Manosiz Bhattacharyya , Bipul Sinha , Amit Ganesh
IPC分类号： G06F17/30
CPC分类号： G06F17/30377
摘要： A method and apparatus for selective removal of user data changes is provided. In one embodiment, the methodology is implemented by a logical recovery mechanism. Upon receiving a request to selectively remove user data changes stored in a database, the mechanism creates an empty set of transactions to be populated for selective removal, identifies one or more transactions and places them in the causal set of transactions. The mechanism further identifies other transactions that logically depend on any transaction already in the causal set of transactions. Finally, either while the causal set of transactions is being identified or after the identification is completed, the mechanism also determines user data changes made by the causal set of transactions. One or more compensating transactions may be generated by the logical recovery mechanism, which when executed, reverse the user data changes.
摘要翻译：提供了用于选择性地去除用户数据变化的方法和装置。在一个实施例中，该方法由逻辑恢复机制来实现。在接收到选择性地删除存储在数据库中的用户数据改变的请求时，该机制创建要填充的空的一组事务以进行选择性删除，识别一个或多个事务并将它们放置在因果集合中。该机制进一步识别逻辑上依赖于因果交易集合中的任何交易的其他交易。最后，既然确定了交易的因果集合，或者在识别完成之后，该机制还确定了因果集交易所做的用户数据更改。一个或多个补偿事务可以由逻辑恢复机制产生，逻辑恢复机制在执行时反转用户数据改变。

34. 发明申请

US20080098045A1 Techniques for automatically tracking and archiving transactional data changes 有权
标题翻译：自动跟踪和归档交易数据更改的技术
公开(公告)号：US20080098045A1
公开(公告)日：2008-04-24
申请号：US11863310
申请日：2007-09-28
申请人： Venkatesh Radhakrishnan , Vasudha Krishnaswamy , Liang Guo , Bipul Sinha , Amit Ganesh
发明人： Venkatesh Radhakrishnan , Vasudha Krishnaswamy , Liang Guo , Bipul Sinha , Amit Ganesh
IPC分类号： G06F17/30
CPC分类号： G06F17/00 , G06F11/00 , G06F17/30 , G06F17/30551 , G06F17/30595
摘要： A technique for making versions of rows of a user-defined tracked table temporally queryable. The database management system of the technique permits temporal queries of user-defined tables. The queries return versions of rows in the user-defined table that are currently in an undo log maintained by the database system. Associated with the tracked table are a system history table which contains versions of the rows and temporal metadata indicating when the versions were in the tracked table and a system form history table which contains versions of the form of the tracked table and metadata indicating when the tracked table had the form. These tables are created and maintained by a background process in the database management system. A temporal query on the tracked table combines results from the undo log with results from the system history table. The results' form is determined by the system form history table.
摘要翻译：用于使用户定义的跟踪表的行的版本在时间上可查询的技术。该技术的数据库管理系统允许用户定义表的临时查询。查询返回用户定义表中当前处于数据库系统维护的撤销日志中的行的版本。与跟踪表相关联的是系统历史表，其中包含行的版本和时间元数据，指示版本在跟踪表中的何时以及系统表单历史表，其中包含跟踪表格和元数据的版本以及指示何时被跟踪的表表有形式。这些表由数据库管理系统中的后台进程创建和维护。跟踪表上的时间查询将撤消日志的结果与系统历史记录表的结果相结合。结果表单由系统表单历史表确定。

35. 发明授权

US07346690B1 Deferred piggybacked messaging mechanism for session reuse 有权
标题翻译：延迟捎带的消息传递机制，用于会话重用
公开(公告)号：US07346690B1
公开(公告)日：2008-03-18
申请号：US10160128
申请日：2002-05-30
申请人： Bipul Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
发明人： Bipul Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
IPC分类号： G06F15/16 , G06F7/00
CPC分类号： G06F17/30286 , Y10S707/99942
摘要： Described herein is a session reuse approach that reuses a session already established on a remote participant to execute an autonomous transaction. The session is reused in a manner that avoids affecting the session's state in a way adverse to later execution of the containing transaction. When beginning an autonomous transaction on a local participant, a request to initiate an autonomous transaction on a remote participant is deferred or not sent at all if the containing transaction is a distributed one. The request may be sent later, piggybacked to another message, using a piggyback messaging system. When ending an autonomous transaction, a local participant may send a request to a remote participant requesting that the remote participant commence execution of its respective containing transaction. The request is piggybacked to another message, and is thus transmitted without having to transmit the request separately, avoiding a message round trip.
摘要翻译：这里描述的是重用在远程参与者上已建立的会话来执行自主事务的会话重用方法。会话被重复使用，以避免影响会话状态的方式不利于稍后执行包含事务。当在本地参与者开始自主交易时，如果包含的交易是分布式交易，则在远程参与者上发起自主交易的请求被推迟或不被发送。该请求可以稍后发送，使用搭载邮件系统捎带到另一个消息。当结束自主交易时，本地参与者可以向远程参与者发送请求，请求远程参与者开始执行其相应的包含交易。该请求捎带到另一个消息，并且因此被传送而不必分别发送请求，避免信息往返。

36. 发明申请

US20060122963A1 System and method for performing a data uniqueness check in a sorted data set 有权
标题翻译：用于在排序数据集中执行数据唯一性检查的系统和方法
公开(公告)号：US20060122963A1
公开(公告)日：2006-06-08
申请号：US10984113
申请日：2004-11-08
申请人： Jonathan Klein , Bipul Sinha , Amit Ganesh
发明人： Jonathan Klein , Bipul Sinha , Amit Ganesh
IPC分类号： G06F17/30
CPC分类号： G06F17/30312 , G06F17/30371
摘要： Embodiments of the present invention include a method for performing a data uniqueness check in a set of sorted data blocks comprising accessing data to be inserted into the set of sorted data blocks, determining a proper data block of the set of sorted data blocks for which the data to be inserted should be located based on a first sorting key. The method further includes examining the proper data block for an existing data entry and if the proper data block is empty, the method further includes inserting the data to be inserted into the proper data block of the set of sorted data blocks.
摘要翻译：本发明的实施例包括一种用于在一组分类数据块中执行数据唯一性检查的方法，包括访问要插入到该排序数据块集合中的数据，确定该排序数据块集合中的适当数据块，应插入的数据应基于第一个排序键来定位。该方法还包括检查现有数据条目的正确数据块，如果正确的数据块为空，则该方法还包括将要插入的数据插入到该排序数据块集合的正确数据块中。

37. 发明申请

US20050055381A1 Active queries filter extraction 审中-公开
标题翻译：主动查询过滤提取
公开(公告)号：US20050055381A1
公开(公告)日：2005-03-10
申请号：US10866433
申请日：2004-06-10
申请人： Amit Ganesh , Bipul Sinha , Srinivas Vemuri
发明人： Amit Ganesh , Bipul Sinha , Srinivas Vemuri
IPC分类号： G06F17/30
CPC分类号： G06F16/24552 , G06F16/24568
摘要： A query result set is an example of a type of body of data whose content is defined by a query. Modifications to a database can change the result of a query and therefore what the content of such a body of data, such as a result set, should be. Active Queries is an approach that enables a database server to detect database changes that alter the result of a query registered for a client and to notify a client of those changes. The notifications may be sent to, for example, a cache manager responsible for maintaining coherency of a result set cache generated by the query. The notification notifies the cache manager of when and/or what changes are needed to maintain the coherency of the cache.
摘要翻译：查询结果集是其内容由查询定义的数据主体类型的示例。对数据库的修改可以改变查询的结果，因此这样一个数据体的内容，比如结果集，应该是什么。活动查询是一种使数据库服务器能够检测数据库更改的方法，可更改为客户端注册的查询结果，并通知客户端这些更改。通知可以被发送到例如负责维护由查询生成的结果集缓存的一致性的高速缓存管理器。该通知通知高速缓存管理器需要什么时候和/或需要什么改变来维持高速缓存的一致性。

38. 发明授权

US08856083B2 Framework to optimize delete all row operations on database objects to improve throughput, query ability and flashback 有权
标题翻译：优化框架来删除数据库对象上的所有行操作，以提高吞吐量，查询能力和回发
公开(公告)号：US08856083B2
公开(公告)日：2014-10-07
申请号：US11450092
申请日：2006-06-09
申请人： Amit Ganesh , Niloy Mukherjee , Manosiz Bhattacharyya , Bipul Sinha
发明人： Amit Ganesh , Niloy Mukherjee , Manosiz Bhattacharyya , Bipul Sinha
IPC分类号： G06F7/00 , G06F17/30 , G06F17/00
CPC分类号： G06F17/30442
摘要： A bulk delete operation with reduced latency allows for retrieval of deleted data. Each database object holds a Delete SCN indicating when a bulk delete operation was last performed. Each row in the database object holds a Row Modification SCN indicating when the row was last updated. A bulk delete is performed by writing the old value of the Delete SCN to the undo tablespace and updating the Delete SCN. No undo information is stored for the rows. A write is performed by finding a deleted row, storing undo information for the deleted row and writing over the deleted row. To read from the database object, a rollback operation is performed, if necessary. Those rows are then retrieved for which the Row Modification SCN is higher than the Delete SCN and is less than or equal to the timestamp for the requested data.
摘要翻译：减少延迟的批量删除操作允许检索已删除的数据。每个数据库对象保存一个删除SCN，指示上次执行批量删除操作的时间。数据库对象中的每一行都保存一行行修改SCN，指示行何时上次更新。通过将删除SCN的旧值写入undo表空间并更新删除SCN来执行批量删除。没有为行存储撤消信息。通过查找删除的行，存储删除的行的撤消信息并写入被删除的行来执行写入。要从数据库对象读取，必要时执行回滚操作。然后检索行修改SCN高于删除SCN并且小于或等于所请求数据的时间戳的那些行。

39. 发明授权

US08015161B2 Method and mechanism for determining life intervals for a key in an index 有权
标题翻译：确定索引中键的生命周期的方法和机制
公开(公告)号：US08015161B2
公开(公告)日：2011-09-06
申请号：US10933828
申请日：2004-09-03
申请人： Bipul Sinha , Vivekanandhan Raja , Amit Ganesh
发明人： Bipul Sinha , Vivekanandhan Raja , Amit Ganesh
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30309
摘要： Disclosed is a mechanism, system, interface, and process to determine one or more life intervals when given a key. In addition, one or more life intervals can be determined for each key within a range of keys. This type of process is useful for auditing purposes or if it is desire to implement a query upon past versions when a key or range of keys is specified for the data for which past versions is desired. This facilitates algorithms, mechanisms, and processes to implement a query upon past versions.
摘要翻译：公开了一种当给予钥匙时确定一个或多个生命周期的机制，系统，界面和过程。另外，可以在一系列键内为每个键确定一个或多个生命周期。这种类型的过程对于审计目的是有用的，或者如果希望在为期望的过去版本的数据指定密钥或密钥范围时希望在过去的版本上实现查询。这有助于算法，机制和过程来实现过去版本的查询。

40. 发明申请

US20100036831A1 GENERATING CONTINUOUS QUERY NOTIFICATIONS 有权
标题翻译：生成连续查询通知
公开(公告)号：US20100036831A1
公开(公告)日：2010-02-11
申请号：US12189078
申请日：2008-08-08
申请人： Srinivas S. Vemuri , Bipul Sinha , Amit Ganesh , Subramanyam B. Chitti
发明人： Srinivas S. Vemuri , Bipul Sinha , Amit Ganesh , Subramanyam B. Chitti
IPC分类号： G06F17/30
CPC分类号： G06F17/30516
摘要： Techniques are described to allow a query to be registered as a persistent stored entity within the database, and to generate notifications as and when the query result changes continuously as long as the query continues to be registered with the database. According to one aspect, for a table referenced in a query, a filter condition is generated based, at least in part, on a predicate of the query. Then, the database server determines whether the filter condition is satisfied by either a before image of a row, or an after image of the row, that was modified by a transaction. If the filter condition is satisfied by either the before image or the after image, then the query is added to a first set of queries whose result sets may have been affected by the transaction. From among the first set of queries, a second set of queries that have result sets that were actually affected by the transaction is determined. Notifications are then sent based on the second set of queries.
摘要翻译：描述技术来允许将查询注册为数据库内的持久存储实体，并且只要查询继续向数据库注册，就可以随着查询结果不断更改而生成通知。根据一个方面，对于在查询中引用的表，基于至少部分地基于查询的谓词生成过滤条件。然后，数据库服务器通过由事务修改的行的先前图像或行的后续图像来确定滤波器条件是否满足。如果过滤条件由前图像或后图像所满足，则将查询添加到其结果集可能受事务影响的第一组查询中。从第一组查询中，确定具有实际受事务影响的结果集的第二组查询。然后基于第二组查询发送通知。

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