专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09824134B2 Database system with transaction control block index 有权
公开(公告)号：US09824134B2
公开(公告)日：2017-11-21
申请号：US14553494
申请日：2014-11-25
申请人： Ivan Schreter , Juchang Lee , Mihnea Andrei , Changgyoo Park
发明人： Ivan Schreter , Juchang Lee , Mihnea Andrei , Changgyoo Park
IPC分类号： G06F17/30 , G06F15/16
CPC分类号： G06F17/30592 , G06F17/30353
摘要： A plurality of transactions is handled in a database. Each transaction includes a plurality of operations on at least one record in the database with at least two of the transactions being handled concurrently. Thereafter, a temporary timestamp is assigned to each record. The temporary timestamp are based, at least in part, on the corresponding transaction. Further, a final timestamp is assigned to each record with a commit operation. It can later be determined, using a visibility function and based on the assigned temporary timestamps and final timestamps, which of the records are visible in a consistent view for a first transaction. Based on such determination, access can be provided to those records determined to be visible to be accessed to the first transaction.

2. 发明申请

US20160147813A1 DISTRIBUTED TRANSACTION COMMIT PROTOCOL 审中-公开
标题翻译：分布式交易委托协议
公开(公告)号：US20160147813A1
公开(公告)日：2016-05-26
申请号：US14656280
申请日：2015-03-12
申请人： Juchang LEE , Changgyoo PARK
发明人： Juchang LEE , Changgyoo PARK
IPC分类号： G06F17/30
CPC分类号： G06F16/2322 , G06F16/128 , G06F16/2365
摘要： Disclosed herein are system, method, and computer program product embodiments for implementing a distributed transaction commit protocol with low latency read and write transactions. An embodiment operates by first receiving a transaction, distributed across partial transactions to be processed at respective cohort nodes, from a client at a coordinator node. The coordinator node requests the cohort nodes to prepare to commit respective partial transactions. Upon receiving prepare commit results, the coordinator node generates a global commit timestamp for the transaction. Coordinator node then simultaneously sends the global commit timestamp to the cohort nodes and commit the transaction to a coordinator disk storage. Upon receiving both sending results from the cohort nodes and a committing result from the coordinator disk storage, the coordinator node provides a transaction commit result of the transaction to the client.
摘要翻译：本文公开了用于实现具有低延迟读写事务的分布式事务提交协议的系统，方法和计算机程序产品实施例。实施例通过首先从协调器节点处的客户端接收分布在要在各个队列节点处处理的部分事务的事务。协调器节点请求队列节点准备提交相应的部分事务。在收到准备提交结果后，协调器节点为事务生成一个全局提交时间戳。协调器节点然后同时将全局提交时间戳发送到队列节点，并将事务提交给协调器磁盘存储。在从队列节点接收到发送结果和协调器磁盘存储的提交结果时，协调器节点向客户端提供事务的事务提交结果。

3. 发明授权

US09792318B2 Supporting cursor snapshot semantics 有权
公开(公告)号：US09792318B2
公开(公告)日：2017-10-17
申请号：US14553790
申请日：2014-11-25
申请人： Ivan Schreter , Juchang Lee , Changgyoo Park , Michael Muehle
发明人： Ivan Schreter , Juchang Lee , Changgyoo Park , Michael Muehle
IPC分类号： G06F7/00 , G06F17/30 , G06F13/14
CPC分类号： G06F17/30371
摘要： A database upon opening each of at least one cursor for a transaction, assigns each statement forming part of a transaction a statement sequence number (SSN) involving at least one row of the database. Thereafter, temporary timestamps are assigned to the at least one row using a transaction identifier and the corresponding SSN. Further, active cursors are monitored such that a final timestamp is prevented from being associated with each row until it has no remaining cursors. Related apparatus, systems, techniques and articles are also described.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式