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Business Objects Software Limited

Xiaofan Zhou

Andrey Belyy

Wu Cao

Freda Xu

A system and method of querying data. The method includes transforming first data according to a unified data model. The unified data model has a hierarchical structure with tree nodes and leaf nodes. A leaf node contains a table. The method further includes executing a unified data model query on the first data (having been transformed) to result in second data. The method further includes outputting the second data.

System and method of querying data

A computer implemented system, program product, and method that organizes hierarchical data into a plurality of columns is disclosed. A schema interface is defined for the data and two types of columns, value columns and occurrence columns, are used. Each value column stores the values for a field. Each occurrence column stores the occurrence numbers for a node that is repeatable, or optional, or in a choice group. The hierarchical relationship of the data is jointly preserved by the schema interface and the occurrence numbers in the occurrence columns. A database management system built upon the method is capable of operating at higher efficiency by combining some of the best aspects of relational database and hierarchical database management systems. The computer implemented method also provides a new and efficient method of exchanging data over networks.

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Cupertino, CA, United States of America

Xiaofan Zhou