We have constructed the healthcare supporting systems for aged people, for patients with diabetes, and for pediatric patients and their families. In these systems, the people in need of nursing care actively and regularly send the healthcare data while the medical personnel view them to make use of subsequent medical services or nursing cares. The architecture is almost common to these systems in the sense that there exists a web and database server together with Internet-enable devices. However, since the data in the databases and to be exchanged were entirely difficult, the systems have been designed, implemented and maintained separately. In this paper, we review the features of the systems, and discuss the united, versatile database system for remote healthcare support.