| 摘要 |
PROBLEM TO BE SOLVED: To efficiently retrieve a structured document under various retrieving conditions, to perform retrieval only under structuring conditions, and to retrieve the character string for the attribute value. SOLUTION: A database construction device comprises an element appearance information storage unit stored with the appearance information of an element by keying an element name ID, an ancestor path appearance information storage part with the appearance information of an element stored by keying the ancestor path name ID of the element, an attribute appearance information storage unit with attribute appearance information stored by keying an attribute name ID, and a text appearance information storage unit with the appearance information on the text character string of an element entity and the attribute value of an attribute owned by the element stored by keying a partial character string. COPYRIGHT: (C)2006,JPO&NCIPI
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