公开(公告)号：US20060224627A1

公开(公告)日：2006-10-05

申请号：US11099918

申请日：2005-04-05

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

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

IPC分类号： G06F17/00

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：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：US20050065949A1

公开(公告)日：2005-03-24

申请号：US10984471

申请日：2004-11-08

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

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

IPC分类号： G06F7/00 ,  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：US20060136351A1

公开(公告)日：2006-06-22

申请号：US11008425

申请日：2004-12-08

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

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

IPC分类号： G06F17/30 ,  G06F9/44

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.

摘要翻译： 管理数据库的数据库服务器检索数据库中与存储在数据库中的过程相关联的元数据。 基于元数据，自动构造Web服务定义，以将过程描述为Web服务。 可以引用WSDL定义来构造具有适当参数和适当格式的SOAP消息，当接收到该消息时，它将被转换为用于由数据库服务器调用该过程的适当格式。

公开(公告)号：US20050138047A1

公开(公告)日：2005-06-23

申请号：US10810152

申请日：2004-03-26

申请人： Zhen Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Ravi Murthy ,  James Warner ,  Thomas Chang ,  Vikas Arora ,  Susan Kotsovolos

发明人： Zhen Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Ravi Murthy ,  James Warner ,  Thomas Chang ,  Vikas Arora ,  Susan Kotsovolos

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/3092

摘要： Techniques for managing XML data associated with multiple execution units ensure that execution units are able to use XML data coming from other execution units. Such techniques are applicable when, but for the technique, an XML type value is produced in a particular form by one execution unit and is supposed to be consumed by another execution unit that is unable to process data in the particular form, and involves detecting that the foregoing situation exists and annotating information sent to an XML producer execution unit to cause the XML type value to be transformed into a canonical form that can be shared by all relevant execution units.

摘要翻译： 管理与多个执行单元相关联的XML数据的技术确保执行单元能够使用来自其他执行单元的XML数据。 这种技术适用于但是对于技术而言，XML类型值由一个执行单元以特定形式产生并且被假定由不能处理特定形式的数据的另一执行单元消耗，并且涉及检测该 存在上述情况并且向XML生成器执行单元注释信息，以使XML类型值被转换成可由所有相关执行单元共享的规范形式。

公开(公告)号：US20050055338A1

公开(公告)日：2005-03-10

申请号：US10656800

申请日：2003-09-05

申请人： James Warner ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Zhen Liu ,  Ravi Murthy ,  Susan Kotsovolos ,  Vikas Arora

发明人： James Warner ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Zhen Liu ,  Ravi Murthy ,  Susan Kotsovolos ,  Vikas Arora

IPC分类号： G06F17/30

CPC分类号： G06F17/30421 ,  G06F17/30436 ,  G06F17/30917

摘要： Disclosed is a method and mechanism for processing expressions and operator trees. An approach is particularly useful to optimize processing of XML statements with respect to SQL operators. A top-down processing approach can be taken to directly output data from operators to a data stream. In addition, multiple processing approaches can be taken within a single expression tree, with some operators processed using the top-down approach and other operators processed with the bottom-up approach. Even data that can not be streamed is copied fewer times using this approach, intermediate values from bottom-up processing may still be streamed if it is used by an operator that is eligible for top-down processing.

摘要翻译： 公开了一种处理表达式和运算符树的方法和机制。 一种方法对于优化与SQL操作符相关的XML语句的处理特别有用。 可以采用自上而下的处理方式将数据从运算符直接输出到数据流。 此外，可以在单个表达式树中采用多种处理方法，一些运算符使用自上而下的方法进行处理，其他运算符也使用自下而上的方法进行处理。 即使不能流式传输的数据也可以使用这种方法被复制较少次，如果由符合自上而下处理的操作符使用，则自下而上处理的中间值可能仍然被流式传输。

公开(公告)号：US08949220B2

公开(公告)日：2015-02-03

申请号：US10810152

申请日：2004-03-26

申请人： Zhen Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Ravi Murthy ,  James Warner ,  Thomas H. Chang ,  Vikas Arora ,  Susan Kotsovolos

发明人： Zhen Liu ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Ravi Murthy ,  James Warner ,  Thomas H. Chang ,  Vikas Arora ,  Susan Kotsovolos

IPC分类号： G06F17/30 ,  G06F7/00

CPC分类号： G06F17/3092

摘要： Techniques for managing XML data associated with multiple execution units ensure that execution units are able to use XML data coming from other execution units. Such techniques are applicable when, but for the technique, an XML type value is produced in a particular form by one execution unit and is supposed to be consumed by another execution unit that is unable to process data in the particular form, and involves detecting that the foregoing situation exists and annotating information sent to an XML producer execution unit to cause the XML type value to be transformed into a canonical form that can be shared by all relevant execution units.

摘要翻译： 用于管理与多个执行单元相关联的XML数据的技术确保执行单元能够使用来自其他执行单元的XML数据。 这种技术适用于但是对于技术而言，XML类型值由一个执行单元以特定形式产生并且被假定由不能处理特定形式的数据的另一执行单元消耗，并且涉及检测该 存在上述情况并且向XML生成器执行单元注释信息，以使XML类型值被转换成可由所有相关执行单元共享的规范形式。

公开(公告)号：US07873645B2

公开(公告)日：2011-01-18

申请号：US10656800

申请日：2003-09-05

申请人： James W. Warner ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Zhen Liu ,  Ravi Murthy ,  Susan Kotsovolos ,  Vikas Arora

发明人： James W. Warner ,  Muralidhar Krishnaprasad ,  Anand Manikutty ,  Zhen Liu ,  Ravi Murthy ,  Susan Kotsovolos ,  Vikas Arora

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/30421 ,  G06F17/30436 ,  G06F17/30917

摘要： Disclosed is a method and mechanism for processing expressions and operator trees. An approach is particularly useful to optimize processing of XML statements with respect to SQL operators. A top-down processing approach can be taken to directly output data from operators to a data stream. In addition, multiple processing approaches can be taken within a single expression tree, with some operators processed using the top-down approach and other operators processed with the bottom-up approach. Even data that can not be streamed is copied fewer times using this approach, intermediate values from bottom-up processing may still be streamed if it is used by an operator that is eligible for top-down processing.

摘要翻译： 公开了一种处理表达式和运算符树的方法和机制。 一种方法对于优化与SQL操作符相关的XML语句的处理特别有用。 可以采用自上而下的处理方式将数据从运算符直接输出到数据流。 此外，可以在单个表达式树中采用多种处理方法，一些运算符使用自上而下的方法进行处理，其他运算符也使用自下而上的方法进行处理。 即使不能流式传输的数据也可以使用这种方法被复制较少次，如果由符合自上而下处理的操作符使用，则自下而上处理的中间值可能仍然被流式传输。

公开(公告)号：US20060235840A1

公开(公告)日：2006-10-19

申请号：US11237286

申请日：2005-09-27

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

发明人： Anand Manikutty ,  Muralidhar Krishnaprasad ,  Zhen Liu ,  Vikas Arora ,  James 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。