Method and apparatus for xml data storage, query rewrites,...

G - Physics – 06 – F

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G06F 17/30 (2006.01) G06F 12/00 (2006.01)

Patent

CA 2421214

Techniques are provided for one or more portions of the relational database to visualized as an XML document. A standard Uniform Resource Locator (URL) mechanism is provided to access data stored in the relational database by defining the URL as an XPath expression over the visualized XML document. Techniques are provided for mapping XML data and metadata from data in relational databases, for allowing the user to use a database query to retrieve data from a relational database in the form of XML documents, and for XML data storage and query rewrites in relational databases.

L'invention concerne des techniques qui permettent de visualiser une ou plusieurs parties d'une base de données relationnelles comme un document XML. Le système comprend un localisateur de ressources universel (URL) standard qui accède à des données stockées dans la base de données relationnelles en définissant l'URL comme une expression "Xpath" dans le document XML visualisé. L'invention concerne des techniques qui permettent à l'utilisateur de mapper des données et des métadonnées XML à partir de données contenues dans la base de données relationnelles, d'utiliser une interrogation de base de données pour extraire des données de la base de données relationnelles sous forme de documents XML, et de stocker les données XML et les réécritures d'interrogation dans la base de données relationnelles.

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