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81. 发明公开

EP3857377A1 DISK DRIVE FAILURE PREDICTION WITH NEURAL NETWORKS 有权
公开(公告)号：EP3857377A1
公开(公告)日：2021-08-04
申请号：EP19779310.2
申请日：2019-09-16
申请人： Oracle International Corporation
发明人： KOCBERBER, Onur , SCHMIDT, Felix , RAGHAVAN, Arun , AGARWAL, Nipun , IDICULA, Sam , ZHOU, Guang-Tong , KUNAL, Nitin
IPC分类号： G06F11/00 , G06N3/02

82. 发明公开

EP3688681A1 GRADIENT-BASED AUTO-TUNING FOR MACHINE LEARNING AND DEEP LEARNING MODELS 审中-公开
公开(公告)号：EP3688681A1
公开(公告)日：2020-08-05
申请号：EP18792657.1
申请日：2018-09-28
申请人： Oracle International Corporation
发明人： VARADARAJAN, Venkatanathan , IDICULA, Sam , AGRAWAL, Sandeep , AGARWAL, Nipun
IPC分类号： G06N20/20

83. 发明公开

EP3198494A1 COMMUNICATION FOR EFFICIENT RE-PARTITIONING OF DATA 有权
标题翻译：沟通有效地重新分配数据
公开(公告)号：EP3198494A1
公开(公告)日：2017-08-02
申请号：EP16738233.2
申请日：2016-05-12
申请人： Oracle International Corporation
发明人： IDICULA, Sam , BASANT, Aarti , AGGARWAL, Vikas , WOLF, Stephan , AGARWAL, Nipun
IPC分类号： G06F17/30 , H04L12/40
CPC分类号： H04L67/10 , G06F16/2471 , G06F16/278 , H04L12/40143 , H04L47/828
摘要： A method, apparatus, and system for efficiently re-partitioning data using scheduled network communication are provided. Given re-partitioning data defining the data blocks to be sent amongst a plurality of server nodes, a corresponding network schedule is determined to send the data blocks in a coordinated manner. The network schedule is divided into time slots, wherein each of the plurality of server nodes can send up to one data block and receive up to one data block in each time slot. By using a greedy selection algorithm that prioritizes by largest senders and largest receivers, a near optimal schedule can be determined even in the presence of heavy skew. The greedy selection algorithm can be implemented with a O(T*N^2) time complexity, enabling scaling to large multi-node clusters with many server nodes. The network schedule is of particular interest for database execution plans requiring re-partitioning on operators with different keys.
摘要翻译：提供了一种使用调度的网络通信有效地重新划分数据的方法，设备和系统。考虑到在多个服务器节点中重新划分定义要发送的数据块的数据，相应的网络调度被确定为以协调的方式发送数据块。网络调度被分成时隙，其中多个服务器节点中的每一个可以发送多达一个数据块并且在每个时隙中接收多达一个数据块。通过使用优先发送者和最大接收者的贪婪选择算法，即使存在严重的歪斜，也可以确定接近最佳的时间表。贪婪选择算法可以用O（T * N2）时间复杂度实现，从而可以扩展到具有许多服务器节点的大型多节点群集。网络时间表对于需要使用不同密钥对运营商进行重新分区的数据库执行计划特别重要。

84. 发明授权

EP1446737B1 AN EFFICIENT INDEX STRUCTURE TO ACCESS HIERARCHICAL DATA IN A RELATIONAL DATABASE SYSTEM 有权
标题翻译：高效索引结构在关系数据库系统访问的分层数据
公开(公告)号：EP1446737B1
公开(公告)日：2016-04-27
申请号：EP02800382.0
申请日：2002-09-26
申请人： Oracle International Corporation
发明人： JALALI, Neema , SEDLAR, Eric , AGARWAL, Nipun , MURTHY, Ravi
IPC分类号： G06F17/30
CPC分类号： G06F17/30595

85. 发明授权

EP2577873B1 A METHOD AND SYSTEM FOR COMPRESSING XML DOCUMENTS 有权
标题翻译：方法和系统压缩XML文档
公开(公告)号：EP2577873B1
公开(公告)日：2016-03-09
申请号：EP11727018.1
申请日：2011-06-01
申请人： Oracle International Corporation
发明人： CHANDRASEKAR, Sivasankaran , AGARWAL, Nipun
IPC分类号： G06F17/30 , H03M7/30
CPC分类号： H03M7/30 , G06F17/30914

86. 发明公开

EP2893468A2 AUTOMATIC DENORMALIZATION FOR ANALYTIC QUERY PROCESSING IN LARGE-SCALE CLUSTERS 有权
标题翻译：自动denormalisation在大型集群分析查询处理
公开(公告)号：EP2893468A2
公开(公告)日：2015-07-15
申请号：EP13766765.5
申请日：2013-09-06
申请人： Oracle International Corporation
发明人： IDICULA, Sam , PETRIDE, Sabina , AGARWAL, Nipun
IPC分类号： G06F17/30
CPC分类号： G06F17/30592 , G06F17/30457 , G06F17/30501
摘要： A system and method for improving performance of join operations is disclosed. The method in one embodiment includes building a graph of vertices and edges, which represent the tables and join conditions for a particular database schema. The method then traverses the graph to find a set of candidate join operations. The method further includes selecting from the set of subset of join operations that makes the best use of a given amount of memory, which means finding a collection of denormalizations which when residing in memory provide the most benefit and the least cost for the given amount of memory. The method then deploys the denormalizations so that current queries in a query processing system can use them instead of actually performing the joins.

87. 发明授权

EP1735726B1 INDEX FOR ACCESSING XML DATA 无效
标题翻译：标引XML数据访问
公开(公告)号：EP1735726B1
公开(公告)日：2012-08-22
申请号：EP05732473.3
申请日：2005-04-06
申请人： ORACLE INTERNATIONAL CORPORATION
发明人： CHANDRASEKAR, Sivasankaran , MURTHY, Ravi , THUSOO, Ashish , TRAN, Anh-Tuan , MUKKAMALLA, Sreedhar , SEDLAR, Eric , AGARWAL, Nipun
IPC分类号： G06F17/30
CPC分类号： G06F17/30911
摘要： Techniques are provided for indexing XML documents. According to one embodiment, a PATH table created for storing one row for each indexed node of the XML documents. The PATH table row for a node includes (1) information for locating the XML document that contains the node, (2) information that identifies the path of the node, and (3) information that identifies the position of the node within the hierarchical structure of the XML document that contains the node. If the node is associated with the value, then the PATH table row for the node may also include the value. Use of the PATH table to answer XPath queries is facilitated by secondary indexes.

88. 发明公开

EP1440394A2 MECHANISM FOR MAPPING XML SCHEMAS TO OBJECT-RELATIONAL DATABASE SYSTEMS 审中-公开
标题翻译：机制FOR XML架构对象上的关系数据库系统IMAGING
公开(公告)号：EP1440394A2
公开(公告)日：2004-07-28
申请号：EP02800376.2
申请日：2002-09-27
申请人： Oracle International Corporation
发明人： MURTHY, Ravi , KRISHNAPRASAD, Muralidhar , CHANDRASEKAR, Sivasankaran , SEDLAR, Eric , KRISHNAMURTHY, Viswanathan , AGARWAL, Nipun
IPC分类号： G06F17/30
CPC分类号： G06F17/30595 , G06F17/30917 , Y10S707/99931 , Y10S707/99933 , Y10S707/99942 , Y10S707/99943 , Y10S707/99945
摘要： A method and system are provided for allowing users to register XML schemas in a database system. The database system determines, based on a registered XML schema, how to store within the database system XML documents that conform to the XML schema. This determination involves mapping constructs defined in the XML schema to constructs supported by the database system. Such constructs may include datatypes, hierarchical relationship between elements, constraints, inheritances, etc. Once the mapping has been determined, it is stored and used by the database system to determine how to store subsequently received XML documents that conform to the registered XML schema.

89. 发明公开

EP1433089A2 PROVIDING A CONSISTENT HIERARCHICAL ABSTRACTION OF RELATIONAL DATA 审中-公开
标题翻译： GENERATING关系数据一致的分层ABSTRACTION
公开(公告)号：EP1433089A2
公开(公告)日：2004-06-30
申请号：EP02799692.5
申请日：2002-09-27
申请人： Oracle International Corporation
发明人： AGARWAL, Nipun , SEDLAR, Eric , MURTHY, Ravi , JAIN, Namit
IPC分类号： G06F17/30
CPC分类号： G06F17/30595 , G06F17/30917 , Y10S707/99931 , Y10S707/99933 , Y10S707/99942 , Y10S707/99943 , Y10S707/99945
摘要： A hierarchy may be explicitly or implicitly reflected in existing data maintained external to hierarchy structures. Such hierarchies are referred to herein as a 'pre-existing hierarchies'. Techniques are described herein for capturing a pre-existing hierarchy in hierarchy structures. After a pre-existing hierarchy has been captured, there exist two independent sets of data that reflect the hierarchy: the external hierarchy definition and the internal hierarchy definition. Changing either hierarchy definition changes the hierarchy. Therefore, to maintain a consistent reflection of the hierarchy, the internal hierarchy definition must be modified in response to changes made to the external hierarchy definition, and the external hierarchy definition must be modified in response to changes made to the internal hierarchy definition. Various techniques are described for maintaining consistency between the two hierarchy definitions.

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