| 摘要 |
PURPOSE:To easily and flexibly obtain the data base retrieving result by generating the data base retrieving expressions after input of the data base retrieving conditions, interpreting the combination retrieving conditions to combine together the data base retrieving expressions, and generating and outputting an integrated retrieving expression to retrieve a data base. CONSTITUTION:When the data base retrieving conditions are inputted by means of an SQL expression, a menu, a natural language, etc., each of independent data base retrieving condition input parts 1 generates a data base retrieving expression. Then an integrated retrieving condition reception part 2 receives the combination retrieving conditions of data base retrieving expressions designated by a user. The combination retrieving conditions are stored in an integrated retrieving condition storage part 3. An integrated retrieving condition generation part 4 interprets the combination retrieving conditions to generate and output a data base integrated retrieving expression. A data base retrieving execution part 5 retrieves a data base, and a retrieving result display part 6 displays the retrieving result to the user.
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