Abstract: A system and method of caching multiple Java-database connectivity is disclosed. A cache manager for cache management is provided between an intermediate server and a database server in the multi-layer Java-database connectivity system having the intermediate server. If the intermediate server provides a query statement for accessing a database, the caching of the intermediate server is operated in a different manner according to the kind of the query statement. Thus, a response time of the system can be reduced from the viewpoint of a user, and the load of the network can be reduced through reduction of the network traffic from the viewpoint of a network. Also, the load of the database server for service requests can be reduced, and a database management system can process more requests from users.

Abstract: A design system based on design options with a shared data base is disclosed. Further, a method therefor and a recording medium are disclosed. A computer-aided design system (CAD) is made to be interlocked to a data management system, so that the productivity aggravation due to the low efficiency and errors in manually carrying out the preparation of the drawings, in the raw material calculation and in the price calculation can be avoided, and that the productivity of the automatic design can be improved. A product design means stores a reference design data, and carries out an actual drawing of a pattern in accordance with the reference design data. A data management means manages a data for design options, transmits a design specification data to the product design means, and receives various data from the product design means so as to manage them. A data matching means shares the design data of both the product design means and the data management means.