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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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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：US08090731B2
公开(公告)日：2012-01-03
申请号：US12180760
申请日：2008-07-28
申请人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Nipun Agarwal , Sam Idicula , Vijay Medi
发明人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Nipun Agarwal , Sam Idicula , Vijay Medi
IPC分类号： G06F17/30
CPC分类号： G06F17/30569 , G06F17/30908
摘要： Techniques are provided for ensuring lexical fidelity when an XML document is stored in a binary format. Operations, on the XML data, that would cause the loss of lexical fidelity between the original XML document and the binary-encoded version of the XML document are not performed. Such operations include the removal of unnecessary whitespace characters, certain data type conversions, CRLF normalization, the “collapsing” of two-tag empty elements into a single tag empty element, and the replacing of entity references or numeric character references with another value. An XML schema, to which the XML document conforms, may indicate that the XML document is to be stored in a lexical fidelity mode. Additionally, or alternatively, the database statement that (when executed) causes the XML document to be stored in a binary format may so indicate.
摘要翻译： 当XML文档以二进制格式存储时，提供了用于确保词汇保真度的技术。 不会执行对原始XML文档和XML文档的二进制编码版本之间的词法保真度的XML数据的操作。 这样的操作包括删除不必要的空白字符，某些数据类型转换，CRLF归一化，将双标签空元素“折叠”到单个标签空元素中，以及用另一个值替换实体引用或数字字符引用。 XML文档符合的XML模式可以指示XML文档将以词法保真模式存储。 另外或替代地，数据库语句（当被执行时）导致XML文档以二进制格式存储可能如此指示。
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公开(公告)号：US07933935B2
公开(公告)日：2011-04-26
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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