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1. 发明授权

US08447736B2 Grammar compression 有权
标题翻译：语法压缩
公开(公告)号：US08447736B2
公开(公告)日：2013-05-21
申请号：US13221227
申请日：2011-08-30
申请人： Stelios Paparizos , Christopher Walter Anderson , Wei Liu , Ajay Nair , Alexandros Ntoulas , Naga Srinivas Vemuri
发明人： Stelios Paparizos , Christopher Walter Anderson , Wei Liu , Ajay Nair , Alexandros Ntoulas , Naga Srinivas Vemuri
IPC分类号： G06F11/14 , G06F17/30 , G06F11/00 , G06F11/20 , G06F13/00
CPC分类号： G06F17/271 , G06F17/30675
摘要： Compression of extensive, rule-based grammars used to facilitate search queries is provided herein. Rule-based grammars include a list of rules that each comprise a sequence of token classes. Each token class is a logical grouping of tokens, and each token is a string of characters. A grammar is parsed to identify rules and token classes. Unimportant token classes are identified and sets of unimportant token classes are merged to generated merged token classes. A compressed grammar is generated by substituting the merged token classes into the grammar for corresponding unimportant token classes used to generate the merged token classes.
摘要翻译：本文提供了压缩用于促进搜索查询的广泛的基于规则的语法。基于规则的语法包括每个包含令牌类序列的规则列表。每个令牌类是令牌的逻辑分组，每个令牌是一串字符。语法被解析以识别规则和令牌类。识别不重要的令牌类，并将不重要的令牌类的集合合并到生成的合并令牌类。通过将合并的令牌类替换为用于生成合并的令牌类的相应的不重要令牌类的语法来生成压缩语法。

2. 发明授权

US07962481B2 Query based invalidation subscription 有权
标题翻译：基于查询的无效订阅
公开(公告)号：US07962481B2
公开(公告)日：2011-06-14
申请号：US10866344
申请日：2004-06-10
申请人： Amit Ganesh , Bipul Sinha , Michael De Groot , Eric W. Bing , Srinivas Vemuri
发明人： Amit Ganesh , Bipul Sinha , Michael De Groot , Eric W. Bing , Srinivas Vemuri
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/3048 , G06F17/30516
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。

3. 发明申请

US20090327269A1 PATTERN GENERATION 审中-公开
标题翻译：图案生成
公开(公告)号：US20090327269A1
公开(公告)日：2009-12-31
申请号：US12163475
申请日：2008-06-27
申请人： STELIOS PAPARIZOS , CHRISTOPHER WALTER ANDERSON , WEI LIU , AJAY NAIR , NAGA SRINIVAS VEMURI
发明人： STELIOS PAPARIZOS , CHRISTOPHER WALTER ANDERSON , WEI LIU , AJAY NAIR , NAGA SRINIVAS VEMURI
IPC分类号： G06F17/30
CPC分类号： G06F16/3322
摘要： Generation of patterns used to facilitate search queries is provided herein. A pattern includes a sequence of token classes and new token classes. A sample query is parsed to identify tokens within the sample query that match a token associated with a referenced set of token classes. New token classes are generated for unidentified tokens within the sample query. A pattern is generated by substituting the identified tokens of the sample query with corresponding token classes and substituting the unidentified tokens of the sample query with corresponding new token classes.
摘要翻译：本文提供了用于促进搜索查询的模式的生成。模式包括令牌类和新令牌类的序列。解析示例查询以识别示例查询中与引用的令牌类集合相关联的令牌匹配的令牌。在示例查询中为不明身份的令牌生成新的令牌类。通过用相应的令牌类替换样本查询的识别令牌，并用对应的新令牌类替换样本查询的未识别令牌来生成模式。

4. 发明申请

US20080098041A1 SERVER SUPPORTING A CONSISTENT CLIENT-SIDE CACHE 审中-公开
标题翻译：服务器支持一致的客户端缓存
公开(公告)号：US20080098041A1
公开(公告)日：2008-04-24
申请号：US11876679
申请日：2007-10-22
申请人： Lakshminarayanan CHIDAMBARAN , Mehul BASTAWALA , Srinath KRISHNASWAMY , Tirthankar LAHIRI , Juan LOAIZA , Bipul SINHA , Srinivas VEMURI
发明人： Lakshminarayanan CHIDAMBARAN , Mehul BASTAWALA , Srinath KRISHNASWAMY , Tirthankar LAHIRI , Juan LOAIZA , Bipul SINHA , Srinivas VEMURI
IPC分类号： G06F17/30
CPC分类号： G06F17/3056
摘要： A method, system, and computer program product is disclosed for interacting with a client supported by a client-side cache. Embodiments of a method, a system, and a computer program product are disclosed that retrieve a first snapshot, indicating a state of the database after a last database request by the client, associated with the client, determine any number of invalid cached results for the client based on the first snapshot, and transmit the any number of invalid cached results and a second snapshot, an update for the first snapshot.
摘要翻译：公开了一种方法，系统和计算机程序产品，用于与由客户端缓存支持的客户端进行交互。公开了一种方法，系统和计算机程序产品的实施例，其检索在与客户端相关联的客户端的最后数据库请求之后指示数据库的状态的第一快照，以确定用于该客户端的任何数量的无效高速缓存结果客户端基于第一个快照，并传送任何数量的无效缓存结果和第二个快照，第一个快照的更新。

5. 发明授权

US06981004B2 Method and mechanism for implementing in-memory transaction logging records 有权
标题翻译：实现内存中事务日志记录的方法和机制
公开(公告)号：US06981004B2
公开(公告)日：2005-12-27
申请号：US10245602
申请日：2002-09-16
申请人： Amit Ganesh , Srinivas Vemuri , Jonathan Klein , Bipul Sinha
发明人： Amit Ganesh , Srinivas Vemuri , Jonathan Klein , Bipul Sinha
IPC分类号： G06F17/30
CPC分类号： G06F17/30368 , G06F17/30371 , Y10S707/99953
摘要： A method and mechanism is disclosed for implementing transaction logging in a database system. In-memory undo records are maintained to log undo information for the database system. Redo records are batch processed, with multiple redo records for a transaction stored on disk at commit time.
摘要翻译：公开了一种在数据库系统中实现事务日志记录的方法和机制。维护内存中的撤销记录以记录数据库系统的撤消信息。重做记录是批量处理的，在提交时存储在磁盘上的事务具有多个重做记录。

6. 发明授权

US06976022B2 Method and mechanism for batch processing transaction logging records 有权
标题翻译：批处理事务日志记录的方法和机制
公开(公告)号：US06976022B2
公开(公告)日：2005-12-13
申请号：US10245118
申请日：2002-09-16
申请人： Srinivas Vemuri , Amit Ganesh , Arvind Nithrakashyap , Roger Bamford , Jonathan Klein , Vikram Joshi
发明人： Srinivas Vemuri , Amit Ganesh , Arvind Nithrakashyap , Roger Bamford , Jonathan Klein , Vikram Joshi
IPC分类号： G06F17/30
CPC分类号： G06F17/30368 , G06F17/30371 , Y10S707/99938
摘要： A method and mechanism is disclosed for implementing transaction logging in a database system. In-memory undo records are maintained to log undo information for the database system. Redo records are batch processed, with multiple redo records for a transaction stored on disk at commit time.
摘要翻译：公开了一种在数据库系统中实现事务日志记录的方法和机制。维护内存中的撤销记录以记录数据库系统的撤消信息。重做记录是批量处理的，在提交时存储在磁盘上的事务具有多个重做记录。

7. 发明申请

US20080098173A1 CONSISTENT CLIENT-SIDE CACHE 有权
标题翻译：一致的客户端缓存
公开(公告)号：US20080098173A1
公开(公告)日：2008-04-24
申请号：US11875782
申请日：2007-10-19
申请人： Lakshminarayanan CHIDAMBARAN , Mehul BASTAWALA , Srinath KRISHNASWAMY , Tirthankar LAHIRI , Juan LOAIZA , Bipul SINHA , Srinivas VEMURI
发明人： Lakshminarayanan CHIDAMBARAN , Mehul BASTAWALA , Srinath KRISHNASWAMY , Tirthankar LAHIRI , Juan LOAIZA , Bipul SINHA , Srinivas VEMURI
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/3048
摘要： A method, system, and computer program product is disclosed for caching results in a client-side cache. Embodiments of a method, a system, and a computer program product are disclosed that associate a first snapshot of a database with a client that indicates a state of the database after a last database request by the client, and indicate any number of invalid cached results in the client cache for the client based upon the first snapshot. In some embodiments, the method further includes receiving a second snapshot that indicates a state of the database upon receipt of a database server request by the client, and updating the first snapshot with the second snapshot.
摘要翻译：公开了用于在客户端缓存中缓存结果的方法，系统和计算机程序产品。公开了一种方法，系统和计算机程序产品的实施例，其将数据库的第一快照与客户端相关联，客户端在客户端的最后一个数据库请求之后指示数据库的状态，并指示任何数量的无效缓存结果在基于第一个快照的客户端缓存中。在一些实施例中，该方法还包括接收第二快照，其指示在客户端收到数据库服务器请求时指示数据库的状态，以及使用第二快照更新第一快照。

8. 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。

9. 发明授权

US08027957B2 Grammar compression 有权
标题翻译：语法压缩
公开(公告)号：US08027957B2
公开(公告)日：2011-09-27
申请号：US12147211
申请日：2008-06-26
申请人： Stelios Paparizos , Christopher Walter Anderson , Wei Liu , Ajay Nair , Alexandros Ntoulas , Naga Srinivas Vemuri
发明人： Stelios Paparizos , Christopher Walter Anderson , Wei Liu , Ajay Nair , Alexandros Ntoulas , Naga Srinivas Vemuri
IPC分类号： G06F7/00 , G06F17/00 , G06F13/14
CPC分类号： G06F17/271 , G06F17/30675
摘要： Compression of extensive, rule-based grammars used to facilitate search queries is provided herein. Rule-based grammars includes a list of rules that each comprise a sequence of token classes. Each token class is a logical grouping of tokens, and each token is a string of characters. A grammar is parsed to identify rules and token classes. Unimportant token classes are identified and sets of unimportant token classes are merged to generated merged token classes. A compressed grammar is generated by substituting the merged token classes into the grammar for corresponding unimportant token classes used to generate the merged token classes.
摘要翻译：本文提供了压缩用于促进搜索查询的广泛的基于规则的语法。基于规则的语法包括每个包含令牌类序列的规则列表。每个令牌类是令牌的逻辑分组，每个令牌是一串字符。语法被解析以识别规则和令牌类。识别不重要的令牌类，并将不重要的令牌类的集合合并到生成的合并令牌类。通过将合并的令牌类替换为用于生成合并的令牌类的相应的不重要令牌类的语法来生成压缩语法。

10. 发明授权

US06983286B1 Method and apparatus for accessing data as it existed at a previous point in time 有权
标题翻译：用于访问在先前时间点存在的数据的方法和装置
公开(公告)号：US06983286B1
公开(公告)日：2006-01-03
申请号：US10325211
申请日：2002-12-18
申请人： Bipul Sinha , Namit Jain , Amit Ganesh , Archna Kalra Johnson , Srinivas Vemuri
发明人： Bipul Sinha , Namit Jain , Amit Ganesh , Archna Kalra Johnson , Srinivas Vemuri
IPC分类号： G06F17/30
CPC分类号： G06F17/30551 , Y10S707/99943
摘要： Techniques are provided for sharing of flashback cursors by adding a time domain property to flashback cursors. This time domain property defines the range of flashback times for which the flashback cursor is valid. According to one embodiment, this “validity range” is closed at the lower bound and open at the upper bound. A subsequent flashback query can share an existing flashback cursor if the flashback time of the subsequent flashback query falls within the validity range of the existing flashback cursor. In one embodiment, the validity range of a flashback cursor is established based on times associated with indexes used to process the flashback query for which the flashback cursor was made. Consequently, an existing flashback cursor is less likely to be used by a subsequent flashback query when it would be inefficient to do so.
摘要翻译：提供了通过向闪回光标添加时域属性来共享闪回光标的技术。此时域属性定义闪回光标有效的闪回时间范围。根据一个实施例，该“有效范围”在下限处封闭并在上限处打开。如果后续闪回查询的闪回时间落在现有闪回游标的有效范围内，后续闪回查询可以共享现有闪回游标。在一个实施例中，闪回光标的有效范围基于与用于处理闪回光标的闪回查询的索引相关联的时间来建立。因此，当这样做的效率低下时，现有的闪回游标不太可能被随后的闪回查询使用。

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