Document database management system and document database retrieving method
First Claim
1. A document database management system comprising:
- a document type storage for storing a plurality of document types, each of which defines structural elements of a structured document and which defines a relationship between the structural elements;
a document storage for storing a first number of documents, each of which is created according to one of the plurality of document types stored in the document type storage;
a query input unit for inputting a query that includes the structural elements and the relationship between the structural elements;
a document type retriever for retrieving at least one document type from the plurality of document types in the document type storage, at least part of the structural elements and the relationship therebetween defined by the document type matching the structural elements and the relationship between the structural elements included in the inputted query, wherein the retrieved at least one document type identifies a subset of a second number of prospective documents from the plurality of documents stored in the document storage, the second number of prospective documents being less than the first number of documents; and
a document retriever for retrieving a document satisfying the inputted query from the subset of prospective documents, each of the prospective documents being created according to the at least one document type retrieved by the document type retriever.
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Abstract
This invention provides a document database management system that reduces time to retrieve a structured document and improves precision of a result of the retrieving. Query input unit inputs a query including structural elements and a relationship between them. Document type retriever retrieves at least one document type that matches to the structural elements and the relationships between them included in the inputted query. Document type display displays the at least one retrieved document type on the screen of the display device. Document type input unit selects a document type from the at least one document type displayed on the screen. Document retriever retrieves a document satisfying the inputted query from prospective documents, each of which is created according to the document type inputted by the document type input unit.
101 Citations
19 Claims
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1. A document database management system comprising:
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a document type storage for storing a plurality of document types, each of which defines structural elements of a structured document and which defines a relationship between the structural elements; a document storage for storing a first number of documents, each of which is created according to one of the plurality of document types stored in the document type storage; a query input unit for inputting a query that includes the structural elements and the relationship between the structural elements; a document type retriever for retrieving at least one document type from the plurality of document types in the document type storage, at least part of the structural elements and the relationship therebetween defined by the document type matching the structural elements and the relationship between the structural elements included in the inputted query, wherein the retrieved at least one document type identifies a subset of a second number of prospective documents from the plurality of documents stored in the document storage, the second number of prospective documents being less than the first number of documents; and a document retriever for retrieving a document satisfying the inputted query from the subset of prospective documents, each of the prospective documents being created according to the at least one document type retrieved by the document type retriever. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for retrieving a document from a document database that stores a first number of a plurality of structured documents, comprising the steps of:
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inputting a query that includes structural elements of a structured document and a relationship therebetween; retrieving at least one document type, which defines structural elements of a structured document and a relationship therebetween, at least part of the structural elements and the relationship therebetween defined by the one document type matching the structural elements and the relationship therebetween included in the inputted query, wherein the retrieved at least one document type identifies a subset of a second number of prospective documents from the plurality of structured documents stored in the document database, the second number of prospective documents being less than the first number of documents; and retrieving a document satisfying the inputted query from the subset of prospective documents, each of the prospective documents being created according to the retrieved at least one document type. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification