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    TECHNIQUES FOR EFFICIENT LOADING OF BINARY XML DATA
    1.
    发明申请
    TECHNIQUES FOR EFFICIENT LOADING OF BINARY XML DATA 有权
    有效加载二进制XML数据的技术

    公开(公告)号：US20080098001A1

    公开(公告)日：2008-04-24

    申请号：US11743563

    申请日：2007-05-02

    申请人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal

    发明人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30569 ,  G06F17/30908 ,  H03M7/30

    摘要： Various techniques are described hereafter for improving the efficiency of binary XML encoding and loading operations. In particular, techniques are described for incrementally encoding XML in response to amount-based requests. After encoding enough binary XML to satisfy an amount-based request, the encoder stops encoding the XML until a subsequent request is received. The incremental encoding may take place on the client-side or the server-side. Techniques are also described for reducing the character set conversion operations by having a parser convert tokens in text XML into one character set while converting non-token text in the text XML into another character set. Techniques are also described for generating self-contained binary XML documents, and for improving remap operations by providing a binary XML document on a chunk-by-chunk basis.

    摘要翻译： 以下描述了用于提高二进制XML编码和加载操作的效率的各种技术。 特别地，描述了用于响应于基于量的请求逐渐编码XML的技术。 在编码足够的二进制XML以满足基于数量的请求之后，编码器停止对XML的编码，直到接收到后续请求。 增量编码可能发生在客户端或服务器端。 还描述了通过使解析器将文本XML中的令牌转换为一个字符集同时将文本XML中的非令牌文本转换为另一个字符集来减少字符集转换操作的技术。 还描述了用于生成自包含二进制XML文档以及通过以块为单位提供二进制XML文档来改进重映射操作的技术。

    Techniques for efficient loading of binary XML data
    2.
    发明授权
    Techniques for efficient loading of binary XML data 有权
    用于高效加载二进制XML数据的技术

    公开(公告)号：US08010889B2

    公开(公告)日：2011-08-30

    申请号：US11743563

    申请日：2007-05-02

    申请人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal

    发明人： Nitin Gupta ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal

    IPC分类号： G06N3/00

    CPC分类号： G06F17/30569 ,  G06F17/30908 ,  H03M7/30

    摘要： Various techniques are described hereafter for improving the efficiency of binary XML encoding and loading operations. In particular, techniques are described for incrementally encoding XML in response to amount-based requests. After encoding enough binary XML to satisfy an amount-based request, the encoder stops encoding the XML until a subsequent request is received. The incremental encoding may take place on the client-side or the server-side. Techniques are also described for reducing the character set conversion operations by having a parser convert tokens in text XML into one character set while converting non-token text in the text XML into another character set. Techniques are also described for generating self-contained binary XML documents, and for improving remap operations by providing a binary XML document on a chunk-by-chunk basis.

    摘要翻译： 以下描述了用于提高二进制XML编码和加载操作的效率的各种技术。 特别地，描述了用于响应于基于量的请求逐渐编码XML的技术。 在编码足够的二进制XML以满足基于数量的请求之后，编码器停止对XML的编码，直到接收到后续请求。 增量编码可能发生在客户端或服务器端。 还描述了通过使解析器将文本XML中的令牌转换为一个字符集同时将文本XML中的非令牌文本转换为另一个字符集来减少字符集转换操作的技术。 还描述了用于生成自包含二进制XML文档以及通过以块为单位提供二进制XML文档来改进重映射操作的技术。

    Flexible storage of XML collections within an object-relational database
    3.
    发明授权
    Flexible storage of XML collections within an object-relational database 有权
    将XML集合灵活存储在对象关系数据库中

    公开(公告)号：US09367642B2

    公开(公告)日：2016-06-14

    申请号：US11246039

    申请日：2005-10-07

    申请人： Abhyudaya Agrawal ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal ,  Eric Sedlar

    发明人： Abhyudaya Agrawal ,  Sivasankaran Chandrasekar ,  Ravi Murthy ,  Nipun Agarwal ,  Eric Sedlar

    IPC分类号： G06F17/30 ,  G06F7/00

    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。

    Mechanism for efficiently evaluating operator trees
    4.
    发明授权
    Mechanism for efficiently evaluating operator trees 有权
    有效评估操作树的机制

    公开(公告)号：US07603347B2

    公开(公告)日：2009-10-13

    申请号：US10944171

    申请日：2004-09-16

    申请人： Ashish Thusoo ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Eric Sedlar ,  Nipun Agarwal

    发明人： Ashish Thusoo ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Eric Sedlar ,  Nipun Agarwal

    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。

    Flexible handling of datetime XML datatype in a database system
    9.
    发明申请
    Flexible handling of datetime XML datatype in a database system 有权
    在数据库系统中灵活处理datetime XML数据类型

    公开(公告)号：US20070038649A1

    公开(公告)日：2007-02-15

    申请号：US11202463

    申请日：2005-08-11

    申请人： Abhyudaya Agrawal ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Nipun Agarwal ,  Eric Sedlar

    发明人： Abhyudaya Agrawal ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Nipun Agarwal ,  Eric Sedlar

    IPC分类号： G06F7/00

    CPC分类号： G06F17/30917 ,  Y10S707/99942 ,  Y10S707/99943

    摘要： A database server registers an XML schema and determines a database representation for the XML schema and mapping information, determining what database types should be used to represent an XML schema and/or how instances of the XML schema are stored by a database system. The mapping information indicates the mapping between the constructs declared in the XML schema and the constructs included in the appropriate database representation. The XML schema may contain annotations that describe one or more properties of a database representation of an XML date-time type. Based on the annotations, the database determines an appropriate database representation and generates mapping information mapping the declaration of the XML date-time type of the XML schema to the constructs of the database representation.

    摘要翻译： 数据库服务器注册XML模式并确定XML模式和映射信息的数据库表示，确定应使用什么数据库类型来表示XML模式和/或数据库系统如何存储XML模式的实例。 映射信息指示在XML模式中声明的结构与包含在适当的数据库表示中的构造之间的映射。 XML模式可能包含描述XML日期时间类型的数据库表示形式的一个或多个属性的注释。 基于注释，数据库确定适当的数据库表示，并生成映射信息，将XML模式的XML日期时间类型的声明映射到数据库表示的构造。

    Loadable units for lazy manifestation of XML documents
    10.
    发明授权
    Loadable units for lazy manifestation of XML documents 有权
    用于懒惰表现XML文档的可加载单元

    公开(公告)号：US07092967B1

    公开(公告)日：2006-08-15

    申请号：US10256777

    申请日：2002-09-27

    申请人： Syam Pannala ,  Eric Sedlar ,  Bhushan Khaladkar ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    发明人： Syam Pannala ,  Eric Sedlar ,  Bhushan Khaladkar ,  Ravi Murthy ,  Sivasankaran Chandrasekar ,  Nipun Agarwal

    IPC分类号： G06F17/30

    CPC分类号： G06F17/30908 ,  Y10S707/99933 ,  Y10S707/99942 ,  Y10S707/99945 ,  Y10S707/99948

    摘要： Described herein is a system for “lazy” manifestation of XML documents. In lazy manifestation, only portions of an XML document that contain data of interest (e.g., a particular element or attribute requested by an application) are manifested. The term “manifesting a portion of an XML document” refers to creating an in-memory representation of the portion and incorporating it into existing in-memory representation of an XML document, if any. These portions are referred to herein as a loadable unit. A loadable unit is a set of one or more nodes in an XML document, where when there is need to manifest a node in the set, other nodes in the loadable unit are manifested too. Loadable units may, but not necessarily, correlate to content structures that store the nodes. A loadable unit may be the nodes whose content is contained in a row.

    摘要翻译： 这里描述了一种用于“懒惰”显示XML文档的系统。 在懒惰表现中，仅显示包含感兴趣的数据的XML文档的部分（例如，应用所请求的特定元素或属性）。 术语“呈现XML文档的一部分”是指创建该部分的内存中表示，并将其并入XML文档的现有内存中表示（如果有的话）。 这些部分在这里被称为可装载单元。 可加载单元是XML文档中的一个或多个节点的集合，其中当需要在集合中显示节点时，可显示可加载单元中的其他节点。 可加载单元可以但不一定与存储节点的内容结构相关联。 可装载单元可以是其行为中包含内容的节点。