이동 객체에 대한 위치 정보의 획득, 저장, 데이터 모델링 방법과 질의 처리 방법에 관한 다양한 연구가 진행됨에 따라 이동 객체의 위치 정보를 획득, 저장, 관리, 질의 처리가 가능한 이동 객체 데이터 베이스 시스템이 등장하고 있다. 그러나 이동중인 사용자가 자신의 요청을 시스템이 제공하는 복잡한 시공간 질의어로 표현하기는 어렵다. 따라서 이 논문에서는 이동 단말기에서 사용자가 편리하게 질의를 요청하고 현재 또는 과거의 위치를 추적하며 이동 객체들에 대한 모니터링을 하기 위한 사용자 인터페이스를 설계하고 이러한 인터페이스를 구현하기 위한 시스템을 설계한다.
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