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1. 发明授权

US06874104B1 Assigning recoverable unique sequence numbers in a transaction processing system 失效
标题翻译：在事务处理系统中分配可恢复的唯一序列号
公开(公告)号：US06874104B1
公开(公告)日：2005-03-29
申请号：US09330865
申请日：1999-06-11
申请人： Jeffrey William Josten , Chandrasekaran Mohan , Inderpal Singh Narang
发明人： Jeffrey William Josten , Chandrasekaran Mohan , Inderpal Singh Narang
IPC分类号： G06F11/00 , G06F17/30
CPC分类号： G06F17/30348 , Y10S707/99938 , Y10S707/99945 , Y10S707/99953
摘要： A method, apparatus, article of manufacture, and data structure for use in providing transaction control for a computer-implemented database management system. The database management system manages one or more databases. A transaction processing system provides transaction control for one or more of the databases managed by the database management system, wherein the transaction processing system assigns a recoverable, unique sequence number whenever a request is made by an application.
摘要翻译：一种用于为计算机实现的数据库管理系统提供事务控制的方法，装置，制造和数据结构。数据库管理系统管理一个或多个数据库。事务处理系统为由数据库管理系统管理的数据库中的一个或多个数据库提供事务控制，其中事务处理系统每当应用程序作出请求时分配可恢复的唯一序列号。

2. 发明授权

US06453325B1 Method and means for backup and restoration of a database system linked to a system for filing data 失效
标题翻译：用于备份和恢复链接到用于归档数据的系统的数据库系统的方法和装置
公开(公告)号：US06453325B1
公开(公告)日：2002-09-17
申请号：US08794691
申请日：1997-02-03
申请人： Luis Felipe Cabrera , Chandrasekaran Mohan , Inderpal Singh Narang
发明人： Luis Felipe Cabrera , Chandrasekaran Mohan , Inderpal Singh Narang
IPC分类号： G06F1200
CPC分类号： G06F11/1461 , G06F2201/80 , Y10S707/99952 , Y10S707/99953 , Y10S707/99955
摘要： In a database system with linkage between data in the database system and files in a system for filing data which is external to the database system (“the filing system”), backup and restoration of the database are coordinated with the filing system. Backup of a referenced file is initiated when the file is linked to the database system. The file backup is asynchronous to the linking process. When database backup occurs, all unfinished file backups are accelerated and completed before the database backup is declared successful. When a database is restored to a state with reference to files in a file manager, the database system causes the file manager to ensure that referenced files are linked to the database system.
摘要翻译：在数据库系统中的数据与数据库系统（“归档系统”）外部的数据系统中的文件之间的链接的数据库系统中，数据库的备份和恢复与归档系统协调。引用文件的备份在文件链接到数据库系统时启动。文件备份与链接过程是异步的。发生数据库备份时，在数据库备份声明成功之前，所有未完成的文件备份将被加速并完成。当数据库恢复到参考文件管理器中的文件的状态时，数据库系统使文件管理器确保引用的文件链接到数据库系统。

3. 发明授权

US5761660A Computer program product and program storage device for database access using a shared electronic store in a multi-system environment having shared disks 失效
标题翻译：用于在具有共享磁盘的多系统环境中使用共享电子商店进行数据库访问的计算机程序产品和程序存储设备
公开(公告)号：US5761660A
公开(公告)日：1998-06-02
申请号：US691273
申请日：1996-08-01
申请人： Jeffrey William Josten , Tina Louise Masatani , Chandrasekaran Mohan , Inderpal S. Narang , James Zu-Chia Teng
发明人： Jeffrey William Josten , Tina Louise Masatani , Chandrasekaran Mohan , Inderpal S. Narang , James Zu-Chia Teng
IPC分类号： G06F12/00 , G06F11/14 , G06F17/30
CPC分类号： G06F17/30362 , G06F11/1471 , Y10S707/99938 , Y10S707/99952 , Y10S707/99953
摘要： A computer-implemented method for minimizing the amount of time to access current data in a database which may be stored wholly in a DASD-oriented external storage subsystem or partly in DASD and partly in a stored high-speed electronic store while maintaining coherency of the data with respect to multiple user systems.
摘要翻译：一种计算机实现的方法，用于最小化访问数据库中当前数据的时间量，其可以完全存储在面向DASD的外部存储子系统中，或者部分地存储在DASD中，部分存储在存储的高速电子存储中，同时保持相对于多个用户系统的数据。

4. 发明授权

US10949415B2 Logging system using persistent memory 有权
公开(公告)号：US10949415B2
公开(公告)日：2021-03-16
申请号：US13077574
申请日：2011-03-31
申请人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Yun Wang
发明人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Yun Wang
IPC分类号： G06F16/23
摘要： A computer program product, including: a computer readable storage device to store a computer readable program, wherein the computer readable program, when executed by a processor within a computer, causes the computer to perform operations for logging. The operations include: receiving a transaction including data and a log record corresponding to the data; writing the data to a data storage device; and writing the log record to a log space on a persistent memory device coupled to the data storage device.

5. 发明授权

US09742860B2 Bi-temporal key value cache system 有权
公开(公告)号：US09742860B2
公开(公告)日：2017-08-22
申请号：US13406758
申请日：2012-02-28
申请人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Rene Mueller
发明人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Rene Mueller
IPC分类号： H04L29/08
CPC分类号： H04L67/2842
摘要： Described herein are techniques for supporting bi-temporal data in a key value cache system. An embodiment provides bi-temporal data as the basic functionality of a key value cache system. An embodiment provides a redesign of the core data structures of a key value cache system, adds bi-temporal data storage in the key value hashing structure, and provides a temporality-aware memory space manager. Embodiments can achieve the same performance as current key value cache systems for regular queries (that is, the queries that only access the current versions of data) while supporting bi-temporal data.

6. 发明授权

US09471622B2 SCM-conscious transactional key-value store 有权
标题翻译：具有SCM意识的事务键值存储
公开(公告)号：US09471622B2
公开(公告)日：2016-10-18
申请号：US13460013
申请日：2012-04-30
申请人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan
发明人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan
IPC分类号： G06F12/00 , G06F13/00 , G06F13/28 , G06F17/30
CPC分类号： G06F17/30377
摘要： Embodiments of a system are described. In one embodiment, the system is a device for performing operations and supporting transactions. The device is configured to receive a transaction comprising a command and data. The device writes the data to a transaction manager on a persistent memory device. The transaction manager also maintains a status of the transaction and reference to entries within memory that are manipulated by the transaction. The device also creates an in-memory log of the transaction in a first hash directory. The device then commits a copy of the first hash directory to a second hash directory maintained on a persistent memory device.
摘要翻译：描述系统的实施例。在一个实施例中，系统是用于执行操作和支持事务的设备。该设备被配置为接收包括命令和数据的事务。设备将数据写入持久存储设备上的事务管理器。事务管理器还维护事务的状态以及由事务处理的内存中的条目的引用。该设备还在第一个散列目录中创建事务的内存中日志。然后，该设备将第一散列目录的副本提交到在持久存储器设备上维护的第二散列目录。

7. 发明申请

US20140059284A1 SYSTEMS, METHODS AND COMPUTER PROGRAM PRODUCTS MEMORY SPACE MANAGEMENT FOR STORAGE CLASS MEMORY 有权
标题翻译：系统，方法和计算机程序产品存储类存储器的存储空间管理
公开(公告)号：US20140059284A1
公开(公告)日：2014-02-27
申请号：US13594098
申请日：2012-08-24
申请人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan
发明人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan
IPC分类号： G06F12/02
CPC分类号： G06F3/0608 , G06F3/0644 , G06F3/0656 , G06F3/0679 , G06F12/02 , G06F12/0646
摘要： Embodiments of the present invention provide a system, method and computer program products for memory space management for storage class memory. One embodiment comprises a method for information storage in an information technology environment. The method comprises storing data in a storage class memory (SCM) space, and storing storage management metadata corresponding to said data, in the SCM in a first data structure. The method further includes buffering storage management metadata corresponding to said data, in a main memory in a second data structure.
摘要翻译：本发明的实施例提供了一种用于存储类存储器的存储器空间管理的系统，方法和计算机程序产品。一个实施例包括在信息技术环境中信息存储的方法。该方法包括在第一数据结构中将数据存储在存储类存储器（SCM）空间中，并且将对应于所述数据的存储管理元数据存储在SCM中。该方法还包括在第二数据结构的主存储器中缓冲对应于所述数据的存储管理元数据。

8. 发明申请

US20120254120A1 LOGGING SYSTEM USING PERSISTENT MEMORY 审中-公开
标题翻译：使用持续记忆的记录系统
公开(公告)号：US20120254120A1
公开(公告)日：2012-10-04
申请号：US13077574
申请日：2011-03-31
申请人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Yun Wang
发明人： Ru Fang , Bin He , Hui-I Hsiao , Chandrasekaran Mohan , Yun Wang
IPC分类号： G06F7/00
CPC分类号： G06F16/2379
摘要： A computer program product, including: a computer readable storage device to store a computer readable program, wherein the computer readable program, when executed by a processor within a computer, causes the computer to perform operations for logging. The operations include: receiving a transaction including data and a log record corresponding to the data; writing the data to a data storage device; and writing the log record to a log space on a persistent memory device coupled to the data storage device.
摘要翻译：一种计算机程序产品，包括：用于存储计算机可读程序的计算机可读存储设备，其中所述计算机可读程序在由计算机内的处理器执行时使所述计算机执行记录操作。操作包括：接收包含数据的事务和对应于该数据的日志记录; 将数据写入数据存储设备; 以及将所述日志记录写入耦合到所述数据存储设备的持久存储器设备上的日志空间。

9. 发明授权

US06581205B1 Intelligent compilation of materialized view maintenance for query processing systems 失效
标题翻译：智能编译查询处理系统的物化视图维护
公开(公告)号：US06581205B1
公开(公告)日：2003-06-17
申请号：US09464556
申请日：1999-12-16
申请人： Roberta Jo Cochrane , Ting Yu Leung , Chandrasekaran Mohan , Mir Hamid Pirahesh , Richard Sefton Sidle
发明人： Roberta Jo Cochrane , Ting Yu Leung , Chandrasekaran Mohan , Mir Hamid Pirahesh , Richard Sefton Sidle
IPC分类号： G06F945
CPC分类号： G06F17/30383 , Y10S707/99933
摘要： A method, apparatus, and article of manufacture for maintaining a materialized view derived from at least one base table in a database stored on a computer. An update is performed to the base table in a transaction. Thereafter, the materialized view is accessed to identify affected records therein using at least one mechanism, such as an isolation level or update- and exclusive-locks, to guarantee consistency while avoiding deadlocks with other transactions that modify at least one base table of the materialized view and to improve concurrency with other transactions that are accessing the materialized view when the modification to the base table is applied to the materialized view.
摘要翻译：一种用于在存储在计算机上的数据库中维护从至少一个基表导出的物化视图的方法，装置和制品。在事务中对基表执行更新。此后，访问物化视图以使用至少一种机制（例如隔离级别或更新和排他锁定）来确定其中的受影响的记录，以保证一致性，同时避免与修改实例化的至少一个基表的其他事务的死锁查看并改进与基础表的修改应用于实例化视图时访问物化视图的其他事务的并发性。

10. 发明授权

US5551027A Multi-tiered indexing method for partitioned data 失效
标题翻译：分区数据的多层索引方法
公开(公告)号：US5551027A
公开(公告)日：1996-08-27
申请号：US526723
申请日：1995-09-11
申请人： David M. Choy , Chandrasekaran Mohan
发明人： David M. Choy , Chandrasekaran Mohan
IPC分类号： G06F12/00 , G06F9/355 , G06F17/30
CPC分类号： G06F17/30321 , G06F9/355 , Y10S707/99952
摘要： A multi-tiered indexing method is disclosed for a partitioned table in a parallel or distributed database system. A Local Index is created and maintained for each partition of the table and a Coarse Global Index is created and maintained. The Coarse Global Index identifies the indexed partition(s) by partition identifiers (PIDs) and associates the individual Index Key Values with their target partitions so that an access request with a highly partition-selective search predicate on the Index Key can be quickly and easily directed to the target partition(s) for processing. An index maintenance locking protocol is also disclosed which handles the insertion and deletion of index entries and assures the consistency between the Local Index entries and the Coarse Global Index entries during concurrent index accesses by different transactions. The locking protocol minimizes locking only to those cases involving an inserted or deleted key and to the key following and possibly the key preceding the inserted or deleted key to allow high concurrency between simultaneous Readers, Inserters, and Deleters. This method enhances the efficiency of complex query evaluation and index maintenance and attains a high throughput for transaction processing.
摘要翻译：公开了一种用于并行或分布式数据库系统中的分区表的多层索引方法。为表的每个分区创建并维护本地索引，并创建和维护粗糙全局索引。粗糙全局索引通过分区标识符（PID）标识索引分区，并将各个索引关键值与其目标分区相关联，以便在索引键上具有高度分区选择性搜索谓词的访问请求可以快速轻松定向到目标分区进行处理。还公开了索引维护锁定协议，其处理索引条目的插入和删除，并且在不同事务的并发索引访问期间确保本地索引条目和粗全局索引条目之间的一致性。锁定协议最大限度地将锁定仅限于涉及插入或删除的密钥的情况以及插入或删除的密钥之后的密钥以及可能的同时读取器，插入器和删除器之间的高并发性的密钥。该方法提高了复杂查询评估和索引维护的效率，实现了交易处理的高吞吐量。

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