| 摘要 |
PURPOSE:To provide an efficient, high-speed retrieval and update process by managing information on property, which can be classified into plural products, divisionally in product units. CONSTITUTION:The property information is stored divisionally in a product data table 102 and operation data tables 104 by products. For the retrieval and update process, a product to be processed is specified in the product data table 102 and an operation data table 104 to be accessed is limited by an operation data table selecting means 105. For a batch deleting process for all property information regarding, specially, the same product, the table of the object product is deleted by an operation data table deleting means 108 without scanning the operation data table. |
