Abstract
We develop a database system for managing the data of the people and their relationships in Heian and Kamakura Periods of Japan. The system cannot only retrieve persons from several genealogical tables but also find a key person between two given persons. Human relationships can be displayed as genealogical trees according to blood or denominations. Moreover we attempt to supply a registration method using GUI, where genealogical trees with level one are registered and later the trees are unified into larger ones. Since the information for data management such as the person's serial number is hidden, the users can register the records and view the genealogical tables without thinking of the database management system.
