| 摘要 |
PROBLEM TO BE SOLVED: To provide a data management method for managing data having a a hierarchical structure such as an electronic catalog data by a RDBMS (relational database management system) and performing quickly data retrieval even if there is a lot of terminal classifications which are inherited from classifications in the course. SOLUTION: The method for managing a whole of objects having in common a part of specification items to manage attribute information, classifying the whole of the objects into repeated groups at each common specification items until the attribute information of the whole of the objects in the groups can be managed by the specification items included in the finally classified groups; setting the whole of the objects as route nodes; creating a hierarchical tree structure in which the classified groups are set as nodes; and creating a table in which the classified specification items are set as fields for the whole of the nodes in the tree structure to manage the attribute information of the objects. COPYRIGHT: (C)2004,JPO
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