摘要：
在未来的几年里，由于电话和移动信息的影响，快速访问地理数据的需求将显著增多。然而，迄今有关的如用于路径规划的无线访问地理数据等客户端问题尚未解决。除了事务管理路径规划系统的地理信息系统技术主要涉及建模技术和以图形为基础的地理数据的管理。我们面临的新的挑战是满足有效的路线的存储和提供基于位置的数据库查询。然而，现今的第一个商业数据库管理系统的移动设备不支持空间数据库查询功能。本文中我们收集了需求和把重点放在目前正在执行的支持数据库查询的路径规划系统上。第一次的经验是对移动自行车路径规划客户端耦合与数据库管理系统的介绍。我们证明了在服务器端的计算和存储的不同的路线类型，以及生成的航线审议语义信息，如旅游信息或道路上的某些要点利息应弥补的主要功能的这样一个系统。移动客户端应提供基于位置的可视化的路线和O型线数据管理路线的数据的数据库支持功能。
Abstract
The impact of tele and mobile information technology will increase the need for fast access to geodata significantly in the next years. However, hitherto many problems concerning the wireless access to geodata e.g. to be used in route planning clients are not yet solved. Beside transaction management the requirements of route planning systems to GIS technology mainly concern the modelling and management of graph-based geodata. New challenges to meet are the efficient storage of routes and the supply of location-based database queries. However, today’s first commercial database management systems for mobile devices do not support spatial database queries. In this article we collect requirements and present a first implementation prototype of a mobile route planning system focusing on the support of spatial database queries. First experiences with a mobile bicycle route planning client coupled with a database management system are presented. We show that at the server side the computation and storage of different route types as well as the generation of routes under consideration of semantic information like tourist information or roads with certain points of interest should make up the main functionality of such a system. The mobile client should supply database support for the location-based visualization of routes and an offline data management of route data.
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