最优路径查询是公交信息系统中的关键技术。
The optimum path query is the key technology in the Bus Information System.
然后建立了路网中最优路径查询的评价体系，并给出了各评价因素及子因素的分析和计算方法；
Then, the evaluation factors system of the shortest paths query system based on the network is established, and the analytic and calculative method of each factor and sub-factor is proposed.
同时，最优路径查询作为公路网GIS重要的社会服务拓展功能之一，有其巨大的社会应用意义。
The inquire function for the optimal route, as one of the important community service expanding functions of HNGIS, has large application meaning for the society.
将多级可拓评价方法应用于移动对象数据库中最优路径的查询系统。
The multilevel extension assessment method is applied to the shortest paths query system in the moving object databases.
而采用基于广度优先算法，在只考虑一到两次换乘的实际情况下，能有效的实现最优路径的查询。
But USES based on the breadth first algorithm, in only considered one to two time trades while the actual situation in, can the effective realization most superior way inquiry.
本文对数据库的查询技术进行分析，给出两种优化方法：分解查询和选择最优存取路径。
In this paper, first the query technology on database is analysed, then two optimization methods are offered: the disintegration query and the best access path selection.
本文对数据库的查询技术进行分析，给出两种优化方法：分解查询和选择最优存取路径。
In this paper, first the query technology on database is analysed, then two optimization methods are offered: the disintegration query and the best access path selection.
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