상세정보
학술대회
Design of Query Language for Location-Based Services
Cited 5 time in 
Download 0 time
Share 
Download 0 time
Share
- 발행일
- 200512
- 출처
- International Workshop on Web and Wireless Geographical Information Systems (W2GIS) 2005 (LNCS 3833), v.3833, pp.11-18
- 협약과제
- 05MD1800, 개방형 LBS 핵심공통기술 개발, 박종현
- 초록
- Recently, the need for LBS (Location Based Services) is increasing due to the widespread of mobile computing devices and positioning technologies. In LBS, there are many applications that need to manage moving objects (e.g. laxies, persons). The trajectories or the positions of moving objects are displayed on the map by using GIS. However, it is hard to use GIS or traditional relational database systems to manage moving objects. Modeling consistent information about the location of continuously moving objects and processing motion-specific queries is challenging problem. The previous studies suggested several query languages to retrieve moving objects. However, they do not propose DDL (Data Definition Language) and do not support full functions that are necessary. In this paper, we formally define a data model and data type for moving objects and propose MOQL (Moving Objects Query Language) which is a convenient interface and tool for developers. MOQL has the following features. First, it supports DDL to insert/delete/update the positions of moving objects. Second, it can be used to retrieve the trajectories of moving objects. Third, it defines several functions to manage spatial or temporal properties of moving objects. © Springer-Verlag Berlin Heidelberg 2005.
- KSP 제안 키워드
- Data Model, Data type, Location-Based Services, Mobile computing devices, Moving Object, Positioning technology, Query Language, Relational database systems, Temporal properties, need for