-
101.发明授权Techniques for more efficient generation of XML events from XML data sources 有权从XML数据源更有效地生成XML事件的技术公开(公告)号：US08543898B2
公开(公告)日：2013-09-24
申请号：US11938020
申请日：2007-11-09
IPC分类号： G06F17/00
CPC分类号： G06F17/272 , G06F17/2247 , G06F17/30938
摘要： One may increase the efficiency of an XML event-generating process by reducing the number of requests to allocate or deallocate system memory. Such reduction may occur as the result of pre-allocating a memory chunk of sufficient size to contain all of the memory buffers required by a particular event-generating process. Instead of allocating new memory chunks for new memory buffers, an application may store any required buffers within the pre-allocated memory chunk. A sufficient memory size may be estimated by performing the event-generating process on a training set of XML documents. Also, an application may re-use buffers during the process or between different iterations of the process, thus avoiding the need to deallocate and reallocate memory that is essentially being used for the same purpose.
摘要翻译： 可以通过减少分配或释放系统内存的请求数来提高XML事件生成过程的效率。 这种减少可以作为预先分配足够大小的存储器块以包含特定事件生成过程所需的所有存储器缓冲器的结果而发生。 代替为新的内存缓冲区分配新的内存块，应用程序可以在预先分配的内存块内存储任何所需的缓冲区。 可以通过对XML文档的训练集执行事件生成过程来估计足够的存储器大小。 此外，应用程序可能会在进程期间或在进程的不同迭代之间重新使用缓冲区，从而避免需要重新分配和重新分配基本上用于相同目的的内存。
-
公开(公告)号：US08429196B2
公开(公告)日：2013-04-23
申请号：US12134196
申请日：2008-06-06
CPC分类号： G06F17/30923
摘要： Techniques are provided for efficiently extracting scalar values from binary-encoded XML data. Node information is stored in association with binary-encoded XML data to indicate whether one or more nodes of an XML document are simple or complex. A node is simple if the node has no child elements and no attributes. The node information of a particular node is used to determine whether a particular node, identified in a query, is simple or complex. If the particular node is simple, then the scalar value of the particular node is identified without performing any operations other than possibly converting the scalar value to a non-binary-encoded format or converting the scalar value to a value of a different data type.
摘要翻译： 提供了从二进制编码的XML数据高效地提取标量值的技术。 节点信息与二进制编码的XML数据相关联地存储以指示XML文档的一个或多个节点是简单还是复杂的。 如果节点没有子元素而没有属性，则节点很简单。 特定节点的节点信息用于确定在查询中标识的特定节点是简单还是复杂。 如果特定节点是简单的，则特定节点的标量值被识别，而不执行除可能将标量值转换为非二进制编码格式之外的任何操作，或者将标量值转换为不同数据类型的值。
-
103.发明授权Loading an index with minimal effect on availability of applications using the corresponding table 有权使用相应的表加载对应用程序可用性影响最小的索引公开(公告)号：US08380702B2
公开(公告)日：2013-02-19
申请号：US12401397
申请日：2009-03-10
IPC分类号： G06F17/30
CPC分类号： G06F17/30911
摘要： A database server provides a partitioned table with a corresponding locally partitioned index. When a request is made to load data into the table by an application, a table partition, along with a corresponding index partition, is created for the application. The corresponding index partition in marked as asynchronously maintained, allowing other index partitions to be used by the query optimizer in formulating query plans for other table partitions. Once the loading of data is complete, a synchronization operation is called with the result of conforming the data in the asynchronously maintained index partition with its corresponding table in which the data was loaded. Once the data in the corresponding table partition and the data in the asynchronously maintained index partition are synchronized, the asynchronously maintained index partition is marked as synchronously maintained.
摘要翻译： 数据库服务器提供具有相应的本地分区索引的分区表。 当应用程序将数据加载到表中时，会为应用程序创建表分区以及相应的索引分区。 相应的索引分区被标记为异步维护，允许查询优化器使用其他索引分区来为其他表分区制定查询计划。 一旦数据加载完成，就会调用同步操作，使异步维护的索引分区中的数据与其中加载数据的对应表相符。 一旦相应表分区中的数据和异步维护的索引分区中的数据同步，则异步维护的索引分区被标记为同步维护。
-
104.发明授权Techniques for efficient and scalable processing of complex sets of XML schemas 有权用于高效和可扩展处理复杂的XML模式集的技术公开(公告)号：US08209361B2
公开(公告)日：2012-06-26
申请号：US12689729
申请日：2010-01-19
申请人： Sam Idicula , Asha Tarachandani , Sivasankaran Chandrasekar , Vijay Medi , Ali Tabar , Nipun Agarwal
发明人： Sam Idicula , Asha Tarachandani , Sivasankaran Chandrasekar , Vijay Medi , Ali Tabar , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/2247 , G06F17/2205 , G06F17/272
摘要： Techniques are described herein for efficient and scalable processing of complex sets of XML schemas. The techniques described herein provide for reducing duplication of schema elements in volatile memory by building an XML schema in-memory model that stores repeating schema elements in in-memory data structures that are separate from in-memory data structures that store the parent schema elements which logically include or otherwise refer to the repeating schema elements. The techniques described herein also provide for faster generation of an in-memory model of an XML schema by pre-loading, in data structures on persistent storage, of schema elements from dependent XML schemas that are referenced and/or incorporated by the XML schema. The techniques described herein also provide for efficient processing of inter-dependent XML schemas by tracking all unresolved schema elements from dependent XML schemas and freeing the portions of volatile memory, which are used to process schema elements from the dependent XML schemas, as soon as the dependent schema elements being processed are stored in data structures on persistent storage.
摘要翻译： 这里描述了用于复杂的XML模式集合的有效和可缩放处理的技术。 本文描述的技术提供了通过构建XML模式内存中模型来减少易失性存储器中的模式元素的重复，该模式将内存模型元素存储在与存储父模式元素的内存中数据结构分开的内存中数据结构中， 逻辑上包括或以其他方式引用重复的模式元素。 本文描述的技术还提供了通过在由XML模式引用和/或并入的依赖XML模式中预先加载在持久存储器上的模式元素的数据结构中来更快地生成XML模式的内存中模型。 本文描述的技术还提供了通过从依赖的XML模式跟踪所有未解决的模式元素并释放用于从依赖的XML模式处理模式元素的易失性存储器的部分的快速处理相互依赖的XML模式，一旦 正在处理的依赖模式元素存储在持久存储器上的数据结构中。
-
公开(公告)号：US08200679B2
公开(公告)日：2012-06-12
申请号：US12328642
申请日：2008-12-04
IPC分类号： G06F17/00
CPC分类号： G06F17/30935
摘要： Techniques are provided for estimating the cardinality of a virtual result table that is produced by executing path-based table functions within a query, such as the XMLTABLE function. Some path-based table functions apply a path expression to input from a base table of XML documents to select rows to produce the result table. Path statistics are collected for the path expressions for the base table. The path statistics are used to estimate the cardinalities of the result table. The estimated cardinality of the result table is useful for estimating costs of query execution plans that are generated for the query.
摘要翻译： 提供了用于估计通过在查询中执行基于路径的表函数（例如XMLTABLE函数）产生的虚拟结果表的基数的技术。 一些基于路径的表函数将路径表达式应用于从XML文档的基表中输入，以选择行以生成结果表。 针对基表的路径表达式收集路径统计信息。 路径统计信息用于估计结果表的基数。 结果表的估计基数对于为查询生成的查询执行计划的估计成本很有用。
-
公开(公告)号：US08180791B2
公开(公告)日：2012-05-15
申请号：US11937357
申请日：2007-11-08
IPC分类号： G06F7/00
CPC分类号： G06F17/30932 , G06F17/30935
摘要： A query is rewritten to combine streaming evaluation and XML index evaluation. The query is rewritten to include a streaming operator (e.g. function) that, when executed, uses streaming evaluation. Further, the query is rewritten so that XML index evaluation of a path expression also produces location information that identifies the location of a node within an XML document. The streaming operator is able to exploit the location information to begin and end scanning rather than scanning the entire XML document.
摘要翻译： 重写查询以组合流评估和XML索引评估。 该查询被重写以包括流执行器（例如，功能），当被执行时，使用流评估。 此外，重写该查询，使得路径表达式的XML索引评估还产生标识XML文档中的节点的位置的位置信息。 流操作员能够利用位置信息开始和结束扫描，而不是扫描整个XML文档。
-
107.发明授权公开(公告)号：US08161074B2
公开(公告)日：2012-04-17
申请号：US12560242
申请日：2009-09-15
IPC分类号： G06F17/30
CPC分类号： G06F17/30917 , G06F17/30451 , Y10S707/99945
摘要： A modular repository is described, where operational features may be implemented without the need to scan every resource included in the modular repository. A modular repository includes a dedicated set of database objects containing all information needed to access the resources in the repository. For example, the database objects of a modular repository may include those user identifier mappings and ACL mappings, etc., to which metadata in the modular repository refers. A database system may also include a mechanism through which a modular repository may be mounted under a subdirectory of a common directory in the database system. The resources of a modular repository that are mounted under the common directory may be accessed through the common directory. Further, a client may query the resources of any modular repository mounted under the common directory by making the federated repository, represented by the common directory, the context of the query.
摘要翻译： 描述了模块化存储库，其中可以实现操作特征，而不需要扫描模块化存储库中包括的每个资源。 模块化存储库包括一组专用的数据库对象，其中包含访问存储库中资源所需的所有信息。 例如，模块化存储库的数据库对象可以包括模块化存储库中的元数据引用的那些用户标识符映射和ACL映射等。 数据库系统还可以包括机构，模块化存储库可以通过该机制安装在数据库系统中的公用目录的子目录下。 安装在公共目录下的模块化存储库的资源可以通过公共目录访问。 此外，客户端可以通过使由共同目录表示的联合存储库，查询的上下文来查询安装在公用目录下的任何模块化存储库的资源。
-
公开(公告)号：US20110295817A1
公开(公告)日：2011-12-01
申请号：US12791337
申请日：2010-06-01
IPC分类号： G06F17/30
CPC分类号： H03M7/30 , G06F17/30914
摘要： A method and apparatus for XXX is provided.
摘要翻译： 提供了一种用于XXX的方法和装置。
-
109.发明授权Global query normalization to improve XML index based rewrites for path subsetted index 有权全局查询规范化，以改进路径子集索引的基于XML索引的重写公开(公告)号：US07991768B2
公开(公告)日：2011-08-02
申请号：US11937268
申请日：2007-11-08
CPC分类号： G06F17/30911 , G06F17/30935
摘要： Techniques for processing a query that includes a path expression are provided. A query processor determines whether an XML index may be used to execute the query instead of having to scan multiple XML documents. The query is parsed and normalized, which results in multiple normalized path expressions that are based on the original path expression. If the XML index is a path-subsetted index, then the query processor generates annotated path expressions based on the normalized path expressions. The query processor determines whether each of the annotated path expressions is satisfiable by the path-subsetted XML index. If so, then the XML index is used to process the query.
摘要翻译： 提供了处理包含路径表达式的查询的技术。 查询处理器确定是否可以使用XML索引来执行查询，而不必扫描多个XML文档。 查询被解析和归一化，这导致基于原始路径表达式的多个标准化路径表达式。 如果XML索引是路径子集索引，则查询处理器将根据归一化的路径表达式生成带注释的路径表达式。 查询处理器确定每个注释路径表达式是否由路径子集的XML索引满足。 如果是这样，则使用XML索引来处理查询。
-
公开(公告)号：US07933933B2
公开(公告)日：2011-04-26
申请号：US11840858
申请日：2007-08-17
申请人： Sabina Petride , Sivasankaran Chandrasekar , Ellen Batbouta , Sam Idicula , Asha Tarachandani , Bhushan Khaladkar , Nipun Agarwal
发明人： Sabina Petride , Sivasankaran Chandrasekar , Ellen Batbouta , Sam Idicula , Asha Tarachandani , Bhushan Khaladkar , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/30923
摘要： Techniques for implementing fast loading of binary XML into a binary XML database repository are provided. A client application reduces the processing burden on the repository by doing pre-processing of the binary XML data prior to loading.
摘要翻译： 提供了将二进制XML快速加载到二进制XML数据库中的技术。 客户端应用程序通过在加载之前对二进制XML数据进行预处理来减少存储库的处理负担。
-
-
-
-
-
-
-
-
-
搜索结果
115 条记录 (耗时 0.034 秒)