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公开(公告)号：US20050050105A1
公开(公告)日：2005-03-03
申请号：US10648749
申请日：2003-08-25
CPC分类号： G06F17/30297 , G06F17/30908
摘要： A method and system for the in-place evolution of XML schemas is disclosed. To automatically evolve an existing XML schema, a schema evolver receives both an existing XML schema and an XML document as input. The XML document indicates changes to be made to the existing XML schema. Based on the existing XML schema and the XML document, the schema evolver evolves the existing XML schema into a new XML schema that incorporates the changes indicated in the XML document. According to one aspect, the schema evolver generates one or more SQL statements based on the new XML schema. The SQL statements, when executed by a database server, cause the database server to evolve database structures that were based on the formerly existing XML schema so that the database structures conform to the new XML schema. This is accomplished “in place,” without copying the data in the database structures.
摘要翻译： 公开了一种用于XML模式的就地演化的方法和系统。 为了自动演进现有的XML模式，模式演进器接收现有的XML模式和XML文档作为输入。 XML文档指示对现有XML模式进行的更改。 基于现有的XML架构和XML文档，架构演进者将现有的XML架构演变为新的XML架构，其中包含XML文档中指示的更改。 根据一个方面，模式演进者基于新的XML模式生成一个或多个SQL语句。 SQL语句在由数据库服务器执行时，会导致数据库服务器发展基于以前存在的XML模式的数据库结构，以便数据库结构符合新的XML模式。 这完成了“到位”，而不复制数据库结构中的数据。
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公开(公告)号：US07395271B2
公开(公告)日：2008-07-01
申请号：US10648497
申请日：2003-08-25
IPC分类号： G06F17/30
CPC分类号： G06F17/30914 , G06F17/2247 , G06F17/227 , Y10S707/99932 , Y10S707/99943 , Y10S707/99944
摘要： A method and system for evolving XML-schema-based data to conform to an evolved XML schema is disclosed. Based on an existing XML schema and an instance document that is based on the existing XML schema, an XML-schema-independent form of the instance document is generated. Based on a set of specified transformations and the XML-schema-independent form of the instance document, an evolved instance document is generated. The evolved instance document conforms to an evolved XML schema that incorporates changes to the existing XML schema. Techniques described herein are flexible enough to accommodate a wide variety of evolutions to XML schemas.
摘要翻译： 公开了一种用于演进基于XML模式的数据以符合演进的XML模式的方法和系统。 基于现有XML模式和基于现有XML模式的实例文档，生成实例文档的与XML模式无关的形式。 基于一组指定的转换和实例文档的与XML模式无关的形式，生成了演进的实例文档。 演进的实例文档符合演进的XML模式，其中包含对现有XML模式的更改。 本文描述的技术足够灵活，以适应各种演进到XML模式。
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公开(公告)号：US20080091623A1
公开(公告)日：2008-04-17
申请号：US11716505
申请日：2007-03-08
IPC分类号： G06Q10/00
CPC分类号： G06F17/30935 , G06Q30/0283
摘要： A method and apparatus for estimating the cost of streaming evaluation of XPaths is provided. Aggregate statistics are maintained by the database server upon initiation of a database function by the database administrator about the nodes of the XML document. Based upon these statistics and the complexity of the particular XPath query, an estimate of the cost of the query, in time and computing resources required, is computed.
摘要翻译： 提供了一种用于估计XPath的流评估成本的方法和装置。 在数据库管理员启动数据库功能时，数据库服务器会保留有关XML文档节点的统计统计信息。 基于这些统计信息和特定XPath查询的复杂性，计算查询的时间和计算资源所需成本的估计。
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公开(公告)号：US20050050056A1
公开(公告)日：2005-03-03
申请号：US10648497
申请日：2003-08-25
CPC分类号： G06F17/30914 , G06F17/2247 , G06F17/227 , Y10S707/99932 , Y10S707/99943 , Y10S707/99944
摘要： A method and system for evolving XML-schema-based data to conform to an evolved XML schema is disclosed. Based on an existing XML schema and an instance document that is based on the existing XML schema, an XML-schema-independent form of the instance document is generated. Based on a set of specified transformations and the XML-schema-independent form of the instance document, an evolved instance document is generated. The evolved instance document conforms to an evolved XML schema that incorporates changes to the existing XML schema. Techniques described herein are flexible enough to accommodate a wide variety of evolutions to XML schemas.
摘要翻译： 公开了一种用于演进基于XML模式的数据以符合演进的XML模式的方法和系统。 基于现有XML模式和基于现有XML模式的实例文档，生成实例文档的与XML模式无关的形式。 基于一组指定的转换和实例文档的与XML模式无关的形式，生成了演进的实例文档。 演进的实例文档符合演进的XML模式，其中包含对现有XML模式的更改。 本文描述的技术足够灵活，以适应各种演进到XML模式。
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公开(公告)号：US08219569B2
公开(公告)日：2012-07-10
申请号：US10648749
申请日：2003-08-25
CPC分类号： G06F17/30297 , G06F17/30908
摘要： A method and system for the in-place evolution of XML schemas is disclosed. To automatically evolve an existing XML schema, a schema evolver receives both an existing XML schema and an XML document as input. The XML document indicates changes to be made to the existing XML schema. Based on the existing XML schema and the XML document, the schema evolver evolves the existing XML schema into a new XML schema that incorporates the changes indicated in the XML document. According to one aspect, the schema evolver generates one or more SQL statements based on the new XML schema. The SQL statements, when executed by a database server, cause the database server to evolve database structures that were based on the formerly existing XML schema so that the database structures conform to the new XML schema. This is accomplished “in place,” without copying the data in the database structures.
摘要翻译： 公开了一种用于XML模式的就地演化的方法和系统。 为了自动演进现有的XML模式，模式演进器接收现有的XML模式和XML文档作为输入。 XML文档指示对现有XML模式进行的更改。 基于现有的XML架构和XML文档，架构演进者将现有的XML架构演变为新的XML架构，其中包含XML文档中指示的更改。 根据一个方面，模式演进者基于新的XML模式生成一个或多个SQL语句。 SQL语句在由数据库服务器执行时，会导致数据库服务器发展基于以前存在的XML模式的数据库结构，以便数据库结构符合新的XML模式。 这完成了“到位”，而不复制数据库结构中的数据。
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公开(公告)号：US07797310B2
公开(公告)日：2010-09-14
申请号：US11716505
申请日：2007-03-08
IPC分类号： G06F17/30
CPC分类号： G06F17/30935 , G06Q30/0283
摘要： A method and apparatus for estimating the cost of streaming evaluation of XPaths is provided. Aggregate statistics are maintained by the database server upon initiation of a database function by the database administrator about the nodes of the XML document. Based upon these statistics and the complexity of the particular XPath query, an estimate of the cost of the query, in time and computing resources required, is computed.
摘要翻译： 提供了一种用于估计XPath的流评估成本的方法和装置。 在数据库管理员启动数据库功能时，数据库服务器会保留有关XML文档节点的统计统计信息。 基于这些统计信息和特定XPath查询的复杂性，计算查询的时间和计算资源所需成本的估计。
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7.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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9.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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