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公开(公告)号：US09667269B2
公开(公告)日：2017-05-30
申请号：US12791337
申请日：2010-06-01
CPC分类号： H03M7/30 , G06F17/30914
摘要： A database server exploits the power of compression and a form of storing relational data referred to as column-major format, to store XML documents in shredded form. The column values that are to be stored for shredded XML documents are separately analyzed for a XML document to determine whether to store a particular column in column-major format or row-major format, and what compression technique to use, if any.
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42.发明授权公开(公告)号：US09367642B2
公开(公告)日：2016-06-14
申请号：US11246039
申请日：2005-10-07
CPC分类号： G06F17/30923 , G06F7/00
摘要： A database server determines, on an element-level of granularity, what form of VARRAY storage to map collections of elements defined by a XML schema. A collection element may be mapped to an in-line VARRAY or an out-of-line VARRAY. The determination may based on a variety of factors, including the database type mapped to the collection element, database limitations that limit the form storage for certain database types, and annotations (“mapping annotations”) embedded within that XML schema that specifying a database type for database representation of a collection element or a form of VARRAY storage.
摘要翻译： 数据库服务器根据粒度级别确定使用什么形式的VARRAY存储来映射由XML模式定义的元素集合。 集合元素可以被映射到串联的VARRAY或者行外的VARRAY。 确定可以基于各种因素，包括映射到集合元素的数据库类型，限制某些数据库类型的表单存储的数据库限制，以及嵌入在指定数据库类型的XML模式中的注释（“映射注释”） 用于收集元素或VARRAY存储的形式的数据库表示。
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公开(公告)号：US07603347B2
公开(公告)日：2009-10-13
申请号：US10944171
申请日：2004-09-16
IPC分类号： G06F17/30
CPC分类号： G06F17/30917 , G06F17/30911 , Y10S707/99934
摘要： An XPath expression is converted into a tree-based representation where each node represents an operation to be performed and the links between nodes in the tree represent the flow of data between operations. The conversion may involve creating a parse tree for the XPath expression, and then converting the parse tree into an operator tree. The operator tree is constructed in such a way that execution of the XPath expression begins at the leaf nodes of the operator tree, and the results are then passed up the tree. After each node is executed, the results are either (1) passed to a filter that filters the results with a predicate statement or (2) passed to another node to be operated upon. This occurs until no nodes remain to be executed.
摘要翻译： XPath表达式被转换为基于树的表示，其中每个节点表示要执行的操作，并且树中的节点之间的链接表示操作之间的数据流。 转换可能涉及为XPath表达式创建解析树，然后将解析树转换为运算符树。 运算符树的构造方式是在运算符树的叶节点处开始执行XPath表达式，然后将结果传递给树。 在执行每个节点后，结果将被传递给过滤器的过滤器，该过滤器使用谓词语句或（2）传递给另一个要运行的节点的结果。 直到没有节点保持执行才发生。
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44.发明授权Method and system for flexible sectioning of XML data in a database system 有权数据库系统中XML数据的灵活分段的方法和系统公开(公告)号：US07461074B2
公开(公告)日：2008-12-02
申请号：US11083828
申请日：2005-03-18
申请人： Ravi Murthy , Eric Sedlar , Sivasankaran Chandrasekar , Ashish Thusoo , Nipun Agarwal , Sreedhar Mukkamalla
发明人： Ravi Murthy , Eric Sedlar , Sivasankaran Chandrasekar , Ashish Thusoo , Nipun Agarwal , Sreedhar Mukkamalla
IPC分类号： G06F17/30
CPC分类号： G06F17/30917 , G06F17/2205 , G06F17/2229 , G06F17/2247 , G06F17/30911 , Y10S707/99933 , Y10S707/99942
摘要： A method and system are provided for flexibly sectioning XML documents stored in a relational database system. The method includes obtaining a set of sectioning rules; receiving an XML document that is to be stored in the relational database system; and identifying a storage location for each node in the XML document based on the set of sectioning rules. The sectioning rules can also be used to determine which tables in the relational database should be queried when a query is received, and to determine which tables in the relational database should be updated when a command to update stored XML data is received.
摘要翻译： 提供了一种方法和系统，用于灵活地划分存储在关系数据库系统中的XML文档。 该方法包括获得一组分段规则; 接收要存储在关系数据库系统中的XML文档; 并基于一组分段规则识别XML文档中每个节点的存储位置。 分段规则还可用于确定在接收到查询时应查询关系数据库中的哪些表，并确定在接收到更新存储的XML数据的命令时，关系数据库中哪些表应更新。
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公开(公告)号：US20080195668A1
公开(公告)日：2008-08-14
申请号：US12103880
申请日：2008-04-16
申请人： Sivasankaran Chandrasekar , Ashish Thusoo , Ravi Murthy , Nipun Agarwal , Eric Sedlar , Sreedhar Mukkamalla
发明人： Sivasankaran Chandrasekar , Ashish Thusoo , Ravi Murthy , Nipun Agarwal , Eric Sedlar , Sreedhar Mukkamalla
IPC分类号： G06F17/00
CPC分类号： G06F17/30914 , G06F17/30911 , G06F17/30929 , Y10S707/99942 , Y10S707/99943 , Y10S707/99945 , Y10S707/99948
摘要： A method and system are provided for extracting a valid, self-contained fragment for a node in a XML document stored in a database management system. An XML index is used to identify a location in which XML fragment data corresponding to the node is located. Ancestors of the node are identified and examined for any information needed for the proper interpretation of the fragment. If an ancestor node contains such needed information, this information is patched into the XML fragment to ensure that the fragment is a valid, self-contained XML fragment.
摘要翻译： 提供了一种用于提取存储在数据库管理系统中的XML文档中的节点的有效的，独立的片段的方法和系统。 XML索引用于标识与节点对应的XML片段数据所在的位置。 识别和检查节点的祖先，以便适当解释片段所需的任何信息。 如果祖先节点包含这些所需的信息，则将该信息修补到XML片段中，以确保该片段是有效的，独立的XML片段。
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公开(公告)号：US20080098020A1
公开(公告)日：2008-04-24
申请号：US11715603
申请日：2007-03-07
IPC分类号： G06F17/30
CPC分类号： G06F17/30911 , G06F17/30569
摘要： Techniques are provided for incrementally maintaining an XML index built to access XML data that is encoded in binary XML form. Rather than delete and reinsert index entries of all the nodes of a modified XML document, only the index entries of the affected nodes are modified. Consequently, the order key values stored in the index may become inconsistent with the current hierarchical locations of the nodes to which the order key values correspond. Techniques are described for resolving the inconsistencies, and for addressing additional problems that result when the XML index is path-subsetted.
摘要翻译： 提供了用于增量维护构建以访问以二进制XML形式编码的XML数据的XML索引的技术。 修改的XML文档的所有节点的删除和重新插入索引条目，而不是修改受影响的节点的索引条目。 因此，存储在索引中的订单键值可能与订单键值对应的节点的当前分层位置变得不一致。 描述了解决不一致的技术，以及解决当XML索引是路径子集化时产生的其他问题。
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公开(公告)号：US20080091714A1
公开(公告)日：2008-04-17
申请号：US11716074
申请日：2007-03-08
IPC分类号： G06F17/00
CPC分类号： G06F17/30923
摘要： A method is provided to efficiently evaluate an expression to determine the partition key for an XML document stored in a database without the entire XML document first being stored in temporary memory storage. The partition key is determined using streaming evaluation or incrementally using a DOM node tree as a portion of the document is read and stored in the buffer. The XML document is stored in the partition using the read portion of the document stored in the buffer and the remaining portion from the original source.
摘要翻译： 提供了一种方法来有效地评估表达式以确定存储在数据库中的XML文档的分区密钥，而不将整个XML文档首先存储在临时存储器存储器中。 当文档的一部分被读取并存储在缓冲器中时，使用流式评估或递增地使用DOM节点树来确定分区密钥。 使用存储在缓冲区中的文档的读取部分和原始源的剩余部分将XML文档存储在分区中。
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公开(公告)号：US20070083529A1
公开(公告)日：2007-04-12
申请号：US11246001
申请日：2005-10-07
IPC分类号： G06F7/00
CPC分类号： G06F17/2247 , G06F17/30917
摘要： A database system automatically detects a cyclic construct in a XML schema, determines a database representation for the cyclic construct, and maps the XML schema and elements involved in the cyclic construct to the database representation.
摘要翻译： 数据库系统自动检测XML模式中的循环结构，确定循环结构的数据库表示，并将循环结构中涉及的XML模式和元素映射到数据库表示。
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49.发明申请公开(公告)号：US20070038649A1
公开(公告)日：2007-02-15
申请号：US11202463
申请日：2005-08-11
IPC分类号： G06F7/00
CPC分类号： G06F17/30917 , Y10S707/99942 , Y10S707/99943
摘要： A database server registers an XML schema and determines a database representation for the XML schema and mapping information, determining what database types should be used to represent an XML schema and/or how instances of the XML schema are stored by a database system. The mapping information indicates the mapping between the constructs declared in the XML schema and the constructs included in the appropriate database representation. The XML schema may contain annotations that describe one or more properties of a database representation of an XML date-time type. Based on the annotations, the database determines an appropriate database representation and generates mapping information mapping the declaration of the XML date-time type of the XML schema to the constructs of the database representation.
摘要翻译： 数据库服务器注册XML模式并确定XML模式和映射信息的数据库表示，确定应使用什么数据库类型来表示XML模式和/或数据库系统如何存储XML模式的实例。 映射信息指示在XML模式中声明的结构与包含在适当的数据库表示中的构造之间的映射。 XML模式可能包含描述XML日期时间类型的数据库表示形式的一个或多个属性的注释。 基于注释，数据库确定适当的数据库表示，并生成映射信息，将XML模式的XML日期时间类型的声明映射到数据库表示的构造。
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公开(公告)号：US07092967B1
公开(公告)日：2006-08-15
申请号：US10256777
申请日：2002-09-27
申请人： Syam Pannala , Eric Sedlar , Bhushan Khaladkar , Ravi Murthy , Sivasankaran Chandrasekar , Nipun Agarwal
发明人： Syam Pannala , Eric Sedlar , Bhushan Khaladkar , Ravi Murthy , Sivasankaran Chandrasekar , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/30908 , Y10S707/99933 , Y10S707/99942 , Y10S707/99945 , Y10S707/99948
摘要： Described herein is a system for “lazy” manifestation of XML documents. In lazy manifestation, only portions of an XML document that contain data of interest (e.g., a particular element or attribute requested by an application) are manifested. The term “manifesting a portion of an XML document” refers to creating an in-memory representation of the portion and incorporating it into existing in-memory representation of an XML document, if any. These portions are referred to herein as a loadable unit. A loadable unit is a set of one or more nodes in an XML document, where when there is need to manifest a node in the set, other nodes in the loadable unit are manifested too. Loadable units may, but not necessarily, correlate to content structures that store the nodes. A loadable unit may be the nodes whose content is contained in a row.
摘要翻译： 这里描述了一种用于“懒惰”显示XML文档的系统。 在懒惰表现中，仅显示包含感兴趣的数据的XML文档的部分（例如，应用所请求的特定元素或属性）。 术语“呈现XML文档的一部分”是指创建该部分的内存中表示，并将其并入XML文档的现有内存中表示（如果有的话）。 这些部分在这里被称为可装载单元。 可加载单元是XML文档中的一个或多个节点的集合，其中当需要在集合中显示节点时，可显示可加载单元中的其他节点。 可加载单元可以但不一定与存储节点的内容结构相关联。 可装载单元可以是其行为中包含内容的节点。
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