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1. 发明授权

US08090731B2 Document fidelity with binary XML storage 有权
标题翻译：使用二进制XML存储文件保真
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。

2. 发明申请

US20090112902A1 DOCUMENT FIDELITY WITH BINARY XML STORAGE 有权
标题翻译：具有二进制XML存储的文档清晰度
公开(公告)号：US20090112902A1
公开(公告)日：2009-04-30
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以这样表示。

3. 发明申请

US20100030726A1 Mechanism For Deferred Rewrite Of Multiple Xpath Evaluations Over Binary XML 有权
标题翻译：延迟重写二进制XML的Xpath评估机制
公开(公告)号：US20100030726A1
公开(公告)日：2010-02-04
申请号：US12181725
申请日：2008-07-29
申请人： Sivasankaran Chandrasekar , Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
发明人： Sivasankaran Chandrasekar , Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/30935 , G06F17/30911
摘要： A mechanism is provided for improving the performance of particular database queries operating on a view comprising binary-encoded XML. The key to improving performance is to determine whether a XML index is available to improve the computation of XPath data before deriving an optimized execution plan for a particular query. When a XML index is not available to help expedite the computation of binary-encoded XML, then deferring the computation of the XPath data until after the view merge stage avoids unnecessary computation of XPaths that are part of the view but not needed for the particular query.
摘要翻译：提供了一种机制，用于提高在包含二进制编码XML的视图上操作的特定数据库查询的性能。提高性能的关键是确定在为特定查询获得优化的执行计划之前，XML索引是否可用于改进XPath数据的计算。当XML索引不可用以帮助加速二进制编码的XML的计算时，则推迟XPath数据的计算，直到视图合并阶段之后，避免不必要的计算XPath作为视图的一部分，但不需要特定的查询。

4. 发明申请

US20100306219A1 Cache-Based Predicate Handling For Queries On XML Data Using Uncorrelated Path-Based Row Sources 有权
标题翻译：基于缓存的谓词处理使用不相关的基于路径的行源的XML数据查询
公开(公告)号：US20100306219A1
公开(公告)日：2010-12-02
申请号：US12474124
申请日：2009-05-28
申请人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Sam Idicula , Nipun Agarwal
发明人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Sam Idicula , Nipun Agarwal
IPC分类号： G06F17/30 , G06F7/00
CPC分类号： G06F17/30935
摘要： The approaches described herein provide an efficient way to process certain kinds of queries that retrieve XML data stored in an object-relational database. An XML query may include a predicate condition that joins two row sources. One or both of the row sources required for predicate evaluation may be path-based; that is, consume and produce rows of XMLType data. Such a path-based row source may be modified to use the predicate condition to filter the rows it generates so that only rows satisfying the predicate condition need to be further processed. A small cache structure introduced into the path-based row source may be used to optimize the evaluation of the predicate row. Once populated with row data, the cache structure may be reorganized to optimize the performance of predicate evaluation.
摘要翻译：本文描述的方法提供了处理检索存储在对象关系数据库中的XML数据的某些类型的查询的有效方式。 XML查询可能包括连接两个行源的谓词条件。谓词评估所需的一个或两个行来源可能是基于路径的; 也就是消耗和生成XMLType数据行。这样的基于路径的行源可以被修改为使用谓词条件来过滤其生成的行，使得仅需要进一步处理满足谓词条件的行。引入基于路径的行源中的小缓存结构可用于优化谓词行的评估。一旦填充行数据，缓存结构可能被重组，以优化谓词评估的性能。

5. 发明授权

US08745031B2 Cache-based predicate handling for queries on XML data using uncorrelated path-based row sources 有权
标题翻译：基于缓存的谓词处理，使用不相关的基于路径的行源查询XML数据
公开(公告)号：US08745031B2
公开(公告)日：2014-06-03
申请号：US12474124
申请日：2009-05-28
申请人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Sam Idicula , Nipun Agarwal
发明人： Balasubramanyam Sthanikam , Sivasankaran Chandrasekar , Sam Idicula , Nipun Agarwal
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30935
摘要： The approaches described herein provide an efficient way to process certain kinds of queries that retrieve XML data stored in an object-relational database. An XML query may include a predicate condition that joins two row sources. One or both of the row sources required for predicate evaluation may be path-based; that is, consume and produce rows of XMLType data. Such a path-based row source may be modified to use the predicate condition to filter the rows it generates so that only rows satisfying the predicate condition need to be further processed. A small cache structure introduced into the path-based row source may be used to optimize the evaluation of the predicate row. Once populated with row data, the cache structure may be reorganized to optimize the performance of predicate evaluation.
摘要翻译：本文描述的方法提供了处理检索存储在对象关系数据库中的XML数据的某些类型的查询的有效方式。 XML查询可能包括连接两个行源的谓词条件。谓词评估所需的一个或两个行来源可能是基于路径的; 就是消费和生成XMLType数据行。这样的基于路径的行源可以被修改为使用谓词条件来过滤其生成的行，使得仅需要进一步处理满足谓词条件的行。引入基于路径的行源中的小缓存结构可用于优化谓词行的评估。一旦填充行数据，缓存结构可能被重组，以优化谓词评估的性能。

6. 发明授权

US08073843B2 Mechanism for deferred rewrite of multiple XPath evaluations over binary XML 有权
标题翻译：对二进制XML进行多个XPath评估的延迟重写的机制
公开(公告)号：US08073843B2
公开(公告)日：2011-12-06
申请号：US12181725
申请日：2008-07-29
申请人： Sivasankaran Chandrasekar , Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
发明人： Sivasankaran Chandrasekar , Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
IPC分类号： G06F7/00
CPC分类号： G06F17/30935 , G06F17/30911
摘要： A mechanism is provided for improving the performance of particular database queries operating on a view comprising binary-encoded XML. A determination is made about whether a XML index is available to improve the computation of XPath data before deriving an optimized execution plan for a particular query. When a XML index is not available to help expedite the computation of binary-encoded XML, then deferring the computation of the XPath data until after the view merge stage avoids unnecessary computation of XPaths that are part of the view but not needed for the particular query.
摘要翻译：提供了一种机制，用于提高在包含二进制编码XML的视图上操作的特定数据库查询的性能。在为特定查询导出优化的执行计划之前，确定XML索引是否可用于改进XPath数据的计算。当XML索引不可用以帮助加速二进制编码的XML的计算时，则推迟XPath数据的计算，直到视图合并阶段之后，避免不必要的计算XPath作为视图的一部分，但不需要特定的查询。

7. 发明申请

US20110179089A1 TECHNIQUES FOR EFFICIENT AND SCALABLE PROCESSING OF COMPLEX SETS OF XML SCHEMAS 有权
标题翻译：用于XML方案的复杂集合的有效和可扩展处理的技术
公开(公告)号：US20110179089A1
公开(公告)日：2011-07-21
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。

8. 发明申请

US20080092037A1 Validation of XML content in a streaming fashion 审中-公开
标题翻译：以流媒体方式验证XML内容
公开(公告)号：US20080092037A1
公开(公告)日：2008-04-17
申请号：US11729943
申请日：2007-03-28
申请人： Vijay Medi , Sam Idicula , Sivasankaran Chandrasekar , Nipun Agarwal
发明人： Vijay Medi , Sam Idicula , Sivasankaran Chandrasekar , Nipun Agarwal
IPC分类号： G06F17/00 , G06F7/00
CPC分类号： G06F17/2725 , G06F17/2247
摘要： A method and apparatus for validating XML documents in a streaming fashion is provided. A streaming validator validates an XML document by comparing the contents of the XML document to an XML schema. Tokens are generated for each element or attribute of the XML schema and for each element or attribute of the XML document using the same generator token function. The elements and attributes of the XML document and XML schema are compared using tokens rather than string comparisons to perform the validation more efficiently.
摘要翻译：提供了以流式方式验证XML文档的方法和装置。流验证器通过将XML文档的内容与XML模式进行比较来验证XML文档。使用相同的生成器令牌函数为XML模式的每个元素或属性以及XML文档的每个元素或属性生成令牌。使用令牌而不是字符串比较来比较XML文档和XML模式的元素和属性，以更有效地执行验证。

9. 发明授权

US08209361B2 Techniques for efficient and scalable processing of complex sets of XML schemas 有权
标题翻译：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。

10. 发明授权

US08239373B2 Efficient way to evaluate uncorrelated path-based row sources with XML storage 有权
标题翻译：用XML存储来评估不相关的基于路径的行源的有效方式
公开(公告)号：US08239373B2
公开(公告)日：2012-08-07
申请号：US12467984
申请日：2009-05-18
申请人： Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
发明人： Balasubramanyam Sthanikam , Sam Idicula , Nipun Agarwal
IPC分类号： G06F17/30
CPC分类号： G06F17/30932
摘要： The approaches described herein provide an efficient way to process certain kinds of queries that retrieve XML data stored in an object-relational database. A technique determines whether a query comprises a plurality of iteration expressions that exhibit a particular relationship to one another, and if so, re-writes the query and produces an optimized query execution plan. The query execution plan specifies an XPath-based row source with caching enabled. A very small cache structure is used, and reference locators are stored in the cache that point into binary-encoded data rather than copying XMLType data into the cache. Row data may be cached on the first use of the path-based row source and re-used in subsequent requests for rows. Once there is a subsequent request for rows from the optimized path-based row source, the cache may be reorganized to efficiently produce the rows of the row source.
摘要翻译：本文描述的方法提供了处理检索存储在对象关系数据库中的XML数据的某些类型的查询的有效方式。技术确定查询是否包括彼此具有特定关系的多个迭代表达式，如果是，则重写该查询并产生优化的查询执行计划。查询执行计划指定启用缓存的基于XPath的行源。使用非常小的缓存结构，参考定位器存储在缓存中，指向二进制编码数据，而不是将XMLType数据复制到缓存中。行数据可以在首次使用基于路径的行源缓存，并在后续的行请求中重新使用。一旦从优化的基于路径的行源中获得行的后续请求，则可以重新组织高速缓存以有效地产生行源的行。

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