| 摘要 |
<P>PROBLEM TO BE SOLVED: To continue service without stopping the database (DB) service by automatically recovering the DB even if the DB is damaged. Ž<P>SOLUTION: A database operation input/output device 001 receives a record insertion request and a record reference/update request from a DB user, and issues an insertion instruction of records and a record reference/update instruction to a record insertion function section 002 and a record reference/update function section, respectively. The record insertion function section inserts a record into the table of a database management section 005. A record reference/update function section 003 refers to and updates the record stored in the table of the database management section 005. When the record ID of the record existing at an address indicated by a pointer does not coincide with that of a leaf node in record reference/update, it is determined that the database has been damaged, and a database damage recovery request is issued to a database recovery function section 004, thus automatically recovering the DB. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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