Patent ID: 7225179
Filing Date: 2007-05-29
Classification: G06F,Y10S

Abstract:
1. A method in a database system including a query processing part for data having a hierarchical structure, comprising: storing information about a structure of said data having a hierarchical structure; storing on a database said data having a hierarchical structure, defined by using a data type definition indicating a type of said data, said data having a hierarchical structure being composed of a plurality of sub-data items; in response to a first query from the query processing part, retrieving both said data having a hierarchical structure and database location information for said data having a hierarchical structure from said database and returning to said query processing part said database location information of said data having a hierarchical structure; and in response to a second query from the query processing part, subsequent to said first query, returning to said query processing part said data having a hierarchical structure retrieved from said database based on said database location information.