Text data registering and retrieving system including a database storing a plurality of document files therin and a plural-character occurrence table for a text index and an update text buffer to retrieve a target document in cooperation with the database
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United States of America Patent
Stats
-
Dec 14, 1999
Grant Date -
N/A
app pub date -
Oct 23, 1997
filing date -
Feb 26, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A text data registering and retrieving method capable of improving the transaction processing performance is provided. The document number of a document for which deletion or replacement has been newly requested is registered in an updated document number list. The text data of the document for which insertion or replacement has been newly requested is registered in an update text buffer. The text data stored temporarily in the update text buffer is registered in a plural-character occurrence file defining a text index in a character component file merge step. The data registered in the plural-character occurrence file is retrieved for query terms. The text data stored in the update text buffer is retrieved for the query terms. The document number of a document updated or deleted is deleted from the result of retrieval in the plural-character occurrence file. Also, the result or the document number obtained in the, update text buffer is added to the result of retrieval to provide a final retrieval result.
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