With rapid spread of EUC (End User Computing), RDB (Relational DataBase) construction and retrieval using GUI (Graphical User Interface) have become a major part of information network users.
Since main activity in the RDB construction is its structure design, this should be carried out efficiently in order to shorten the construction term.
Although the function of displaying entire structure (table structures and relations between tables) defined by users is provided as a “structure chart” display function in most RDBMS (Relational DataBase Management System) to support such activity, we can say that its quality is not high enough at present. For example, the chart contains many backward or intersecting arrows (relations between tables) and the tables placed are not well-balanced. Therefore, it is not easy to grasp the entire structure by the present chart. And this has been the cause of inefficiency in the RDB construction.
In this paper, we propose a new method of making and displaying a high quality structure chart using BBM (Branch and Bound Method) and Fuzzy Inference as a solution to the above problems. Furthermore, we verify the effect of the proposed method in experiment.
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