公开(公告)号：US07523131B2

公开(公告)日：2009-04-21

申请号：US11056312

申请日：2005-02-10

申请人： James W. Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Hua Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan M. Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

发明人： James W. Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Hua Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan M. Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

IPC分类号： G06F17/00

CPC分类号： G06F17/30917 ,  Y10S707/99934 ,  Y10S707/99943

摘要： To associate XML data objects (“child objects”), stored in rows of relational or object-relational tables, with the appropriate XML data objects (“parent objects”) from which the child objects descend, tables that contain child objects (“out-of-line” tables) are constructed with an additional column. In one embodiment, this column stores values that identify the root objects, in the appropriate table, from which the respective child objects descend. Hence, the root object from which any given object descends is traceable by following the respective value back to the corresponding root object. In one embodiment, this column stores values that identify the complete XML hierarchical path, through multiple tables, back to the root object from which the respective child objects descend. Consequently, XML query language queries against XML documents stored in such tables can be rewritten as SQL queries against the data in the tables, even in the presence of cyclic constructs.

摘要翻译： 将存储在关系关系表或对象关系表行中的XML数据对象（“子对象”）与子对象所属的相应XML数据对象（“父对象”）相关联，包含子对象的表（“out” -line“表）用另外的列构造。 在一个实施例中，该列存储识别相应子对象下降的适当表中的根对象的值。 因此，通过将相应的值追溯到相应的根对象，可以追溯任何给定对象下降的根对象。 在一个实施例中，该列将通过多个表标识完整的XML分层路径的值存储回到相应子对象从其下降的根对象。 因此，即使在存在循环结构的情况下，存储在这些表中的XML文档的XML查询语言查询可以重写为表中数据的SQL查询。

公开(公告)号：US07685150B2

公开(公告)日：2010-03-23

申请号：US11237286

申请日：2005-09-27

申请人： Anand Manikutty ,  Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Vikas Arora ,  James W. Warner ,  Rohan Angrish ,  Hui Zhang

发明人： Anand Manikutty ,  Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Vikas Arora ,  James W. Warner ,  Rohan Angrish ,  Hui Zhang

IPC分类号： G06F17/30

CPC分类号： G06F17/30935 ,  Y10S707/99943

摘要： Optimization is provided for database statements involving XML data, e.g., XPath and XQuery, which operate over views that use aggregate set operators, e.g., UNION ALL. As part of a “view merge” stage of query transformation, the query that operates over the view is merged with a query that defines the view. One or more expressions (e.g., operators, predicates, virtual table constructs) from the query that operates over the view are then “pushed down” to operate on the individual underlying XML data constructs. “Branch elimination” is performed based on the structure of the view and the query acting over the view, based on which it is possible to determine whether any of the sub-queries, if executed, would result in the return of zero rows. If so, then such branches are eliminated from the transformed query, leaving a reduced set of data containers on which to execute the query.

摘要翻译： 针对涉及XML数据的数据库语句（例如，XPath和XQuery）提供优化，该数据库语句对使用聚合集合运算符（例如UNION ALL）的视图进行操作。 作为查询转换的“视图合并”阶段的一部分，通过视图操作的查询与定义视图的查询合并。 然后，通过视图操作的查询中的一个或多个表达式（例如，运算符，谓词，虚拟表结构）被“推下”以对各个底层XML数据结构进行操作。 基于视图的结构和在视图上执行的查询执行“分支消除”，基于此可以确定是否任何子查询（如果被执行）将导致返回零行。 如果是这样，则从转换的查询中消除这样的分支，留下一组减少的数据容器来执行查询。

公开(公告)号：US07908286B2

公开(公告)日：2011-03-15

申请号：US11007894

申请日：2004-12-08

申请人： Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Karuna Muthiah ,  Ying Lu ,  James W. Warner ,  Rohan Angrish ,  Vikas Arora ,  Anand Manikutty

发明人： Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Karuna Muthiah ,  Ying Lu ,  James W. Warner ,  Rohan Angrish ,  Vikas Arora ,  Anand Manikutty

IPC分类号： G06F17/30

CPC分类号： G06F17/30923 ,  G06F17/30861

摘要： An XQuery access API is described, for providing access to XML data from a data source, using the XQuery language. A requestor can request, from a server, performance of an operation on XML data, wherein request messages and response messages conform to the Simple Object Access Protocol (SOAP). Request and response messages can be transmitted using Hypertext Transfer Protocol (HTTP) or Hypertext Transfer Protocol over Secure Socket Layer (HTTPS). The format of the request and response messages is specified in a definition of a Web service, where the definition conforms to the Web Service Description Language (WSDL).

摘要翻译： 描述了一个XQuery访问API，用于使用XQuery语言提供从数据源访问XML数据。 请求者可以从服务器请求执行对XML数据的操作，其中请求消息和响应消息符合简单对象访问协议（SOAP）。 请求和响应消息可以使用超文本传输​​协议（HTTP）或超文本传输​​协议通过安全套接字层（HTTPS）传输。 请求和响应消息的格式在Web服务的定义中指定，其中定义符合Web服务描述语言（WSDL）。

公开(公告)号：US09760647B2

公开(公告)日：2017-09-12

申请号：US11008425

申请日：2004-12-08

申请人： Rohan Angrish ,  James W. Warner ,  Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Vikas Arora ,  Susan M. Kotsovolos

发明人： Rohan Angrish ,  James W. Warner ,  Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Vikas Arora ,  Susan M. Kotsovolos

IPC分类号： G06F7/00 ,  G06F17/30 ,  G06F9/54

CPC分类号： G06F17/3089 ,  G06F9/547

摘要： A database server that manages a database retrieves metadata that is stored, within the database, in association with a procedure that is stored in the database. Based on the metadata, a Web service definition is automatically constructed to describe the procedure as a Web service. The WSDL definition can be referenced to construct SOAP messages with the appropriate arguments and in the appropriate format which, when received, are converted to a suitable format for invoking execution of the procedure by the database server.

公开(公告)号：US08375043B2

公开(公告)日：2013-02-12

申请号：US13009712

申请日：2011-01-19

申请人： Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Karuna Muthiah ,  Ying Lu ,  James W. Warner ,  Rohan Angrish ,  Vikas Arora ,  Anand Manikutty

发明人： Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  Karuna Muthiah ,  Ying Lu ,  James W. Warner ,  Rohan Angrish ,  Vikas Arora ,  Anand Manikutty

IPC分类号： G06F17/30

CPC分类号： G06F17/30923 ,  G06F17/30861

摘要： An XQuery access API is described, for providing access to XML data from a data source, using the XQuery language. A requestor can request, from a server, performance of an operation on XML data, wherein request messages and response messages conform to the Simple Object Access Protocol (SOAP). Request and response messages can be transmitted using Hypertext Transfer Protocol (HTTP) or Hypertext Transfer Protocol over Secure Socket Layer (HTTPS). The format of the request and response messages is specified in a definition of a Web service, where the definition conforms to the Web Service Description Language (WSDL).

摘要翻译： 描述了一个XQuery访问API，用于使用XQuery语言提供从数据源访问XML数据。 请求者可以从服务器请求执行对XML数据的操作，其中请求消息和响应消息符合简单对象访问协议（SOAP）。 请求和响应消息可以使用超文本传输​​协议（HTTP）或超文本传输​​协议通过安全套接字层（HTTPS）传输。 请求和响应消息的格式在Web服务的定义中指定，其中定义符合Web服务描述语言（WSDL）。

公开(公告)号：US07386568B2

公开(公告)日：2008-06-10

申请号：US10984471

申请日：2004-11-08

申请人： James W. Warner ,  Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Rohan Angrish ,  Vikas Arora ,  Susan M. Kotsovolos

发明人： James W. Warner ,  Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Rohan Angrish ,  Vikas Arora ,  Susan M. Kotsovolos

IPC分类号： G06F17/30

CPC分类号： G06F17/30917 ,  G06F17/30448 ,  G06F17/30938 ,  Y10S707/99943

摘要： Techniques are described for executing queries that have XPath sections that specify unmappable paths. The techniques involve splitting the unmappable paths into (1) a mappable path fragment, and (2) an unmappable path fragment. After an unmappable path has been split into a mappable path fragment and an unmappable path fragment, the XPath section is replaced with a replacement XPath section. The replacement XPath section specifies two operations: a “mappable operation” that is based on the mappable path fragment, and an “unmappable operation” that is based on the unmappable path fragment. The portion of the replacement XPath section that specifies the mappable operation is rewritten to access underlying relational structures. Consequently, when the rewritten query is executed, a smaller amount of XML data needs to be materialized to evaluate the unmappable path fragment than would otherwise have been required to evaluate the original unmappable path.

摘要翻译： 描述了执行具有指定不可映射路径的XPath节的查询的技术。 这些技术涉及将不可映射的路径分解为（1）可映射路径片段，以及（2）不可映射的路径片段。 将不可映射路径分解为可映射路径片段和不可映射路径片段后，XPath节将替换为替换的XPath节。 替换XPath部分指定两个操作：基于可映射路径片段的“可映射操作”和基于不可映射路径片段的“不可映映操作”。 替换XPath部分指定可映射操作的部分被重写为访问基础关系结构。 因此，当执行重写的查询时，需要实现较少量的XML数据来评估不可映射的路径片段，而不是否则需要评估原始的不可映射路径。

公开(公告)号：US07305414B2

公开(公告)日：2007-12-04

申请号：US11099918

申请日：2005-04-05

申请人： Anand Manikutty ,  Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  James Warner ,  Rohan Angrish ,  Vikas Arora ,  Susan Kotsovolos ,  Ravi Murthy ,  Wesley Lin

发明人： Anand Manikutty ,  Muralidhar Krishnaprasad ,  Zhen Hua Liu ,  James Warner ,  Rohan Angrish ,  Vikas Arora ,  Susan Kotsovolos ,  Ravi Murthy ,  Wesley Lin

IPC分类号： G06F17/30

CPC分类号： G06F17/30938 ,  Y10S707/99943

摘要： A method and apparatus for rewriting a database command containing an embedded XML expression such that the rewritten database command recites a text function, in lieu of the embedded XML expression, is provided. Advantageously, a DBMS may take advantage of the efficiencies in storing XML data within the database, while avoiding the generation of unnecessary XML elements in processing the query when the XML elements contribute nothing to the outcome of the query. Cost-base or rule-based analysis may be performed to determine how to rewrite a received database command. The database server may functionally evaluate the text function or may use an index defined on a column of the database. The text function may function as a primary filter or may reference a column upon which an index is defined, wherein the index operates at the same or higher level than a column being referenced in the embedded XML expression.

摘要翻译： 提供一种用于重写包含嵌入式XML表达式的数据库命令的方法和装置，使得重写的数据库命令背景文本功能代替嵌入的XML表达。 有利地，DBMS可以利用在数据库中存储XML数据的效率，同时避免在XML元素对查询的结果没有贡献时在处理查询时生成不必要的XML元素。 可以执行基于成本或基于规则的分析来确定如何重写接收到的数据库命令。 数据库服务器可以在功能上评估文本功能，或者可以使用在数据库的列上定义的索引。 文本函数可以用作主过滤器，或者可以引用定义索引的列，其中索引在与嵌入式XML表达式中引用的列相同或更高的级别上操作。

公开(公告)号：US20060179068A1

公开(公告)日：2006-08-10

申请号：US11056312

申请日：2005-02-10

申请人： James Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

发明人： James Warner ,  Abhyudaya Agrawal ,  Hui Zhang ,  Muralidhar Krishnaprasad ,  Ravi Murthy ,  Zhen Liu ,  Nipun Agarwal ,  Vikas Arora ,  Susan Kotsovolos ,  Anand Manikutty ,  Rohan Angrish

IPC分类号： G06F7/00

CPC分类号： G06F17/30917 ,  Y10S707/99934 ,  Y10S707/99943

摘要： To associate XML data objects (“child objects”), stored in rows of relational or object-relational tables, with the appropriate XML data objects (“parent objects”) from which the child objects descend, tables that contain child objects (“out-of-line” tables) are constructed with an additional column. In one embodiment, this column stores values that identify the root objects, in the appropriate table, from which the respective child objects descend. Hence, the root object from which any given object descends is traceable by following the respective value back to the corresponding root object. In one embodiment, this column stores values that identify the complete XML hierarchical path, through multiple tables, back to the root object from which the respective child objects descend. Consequently, XML query language queries against XML documents stored in such tables can be rewritten as SQL queries against the data in the tables, even in the presence of cyclic constructs.

公开(公告)号：US07730080B2

公开(公告)日：2010-06-01

申请号：US11474038

申请日：2006-06-23

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Hui Joe Chang ,  Anand Manikutty ,  James W. Warner ,  Vikas Arora ,  Susan Kotsovolos

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Hui Joe Chang ,  Anand Manikutty ,  James W. Warner ,  Vikas Arora ,  Susan Kotsovolos

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/30935

摘要： A method for processing queries is provided. A first representation of a query is generated, where the query includes a certain operator that is to be performed based on an XPath expression that is expandable into multiple location paths. The first representation of the query is rewritten into a second representation that corresponds to an equivalent query, where rewriting the first representation includes expanding the XPath expression into the plurality of location paths and, based on the certain operator, including a plurality of operators in the second representation, where the plurality of operators include: a first set of operators that is to be performed based on each of the plurality of location paths, and a second set of operators that is to be performed based on data returned from at least one operator included in the first set of operators. The query may thereafter be executed based on the second representation. The second representation may be further rewritten to third representation depending on the physical storage of XML.

摘要翻译： 提供了一种处理查询的方法。 生成查询的第一个表示形式，其中查询包含一个基于可扩展到多个位置路径的XPath表达式执行的某个运算符。 查询的第一表示被重写成对应于等效查询的第二表示，其中重写第一表示包括将XPath表达式扩展到多个位置路径中，并且基于特定运算符，包括多个运算符 第二表示，其中所述多个运算符包括：将基于所述多个位置路径中的每一个来执行的第一组运算符，以及将基于从至少一个运算符返回的数据来执行的第二组运算符 包含在第一组运算符中。 此后可以基于第二表示来执行查询。 取决于XML的物理存储，第二表示可以进一步重写为第三表示。

公开(公告)号：US07685137B2

公开(公告)日：2010-03-23

申请号：US11044472

申请日：2005-01-26

申请人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Vikas Arora ,  James W. Warner ,  Anand Manikutty

发明人： Zhen Hua Liu ,  Muralidhar Krishnaprasad ,  Vikas Arora ,  James W. Warner ,  Anand Manikutty

IPC分类号： G06F7/00

CPC分类号： G06F17/2247

摘要： A universal format is used to create a type representation of XMLType instances that are generated in various ways from various sources. An XMLType Type Tree is represented as a hierarchy of nodes, including leaf item node, composite item node, operator node, aggregate node, referred to herein as an XMLType Type Tree. An XMLType Type Tree serves as a digest of the type structure of XMLType, no matter the source of the XMLType instance or its manner of its generation and it creates one uniform abstraction of the type structure of XMLType for the data-typing analysis of XPath and XQuery during query compile time.

摘要翻译： 通用格式用于创建以各种方式生成的XMLType实例的类型表示形式。 XMLType类型树被表示为节点的层次结构，包括叶项目节点，复合项目节点，运营商节点，聚合节点，这里称为XMLType类型树。 XMLType类型树作为XMLType的类型结构的摘要，无论XMLType实例的来源或其生成方式如何，它都会为XPath的数据类型分析创建XMLType类型结构的一个统一抽象， 查询编译期间的XQuery。