Advanced a New Vector Data Query Optimization Method Based on Cost Function

With the development of information technology, the bandwidth network resources begin not only more and more poor, but also restrict the vector data query speed. In order to improve the query speed, this paper proposed a novel vector data inquiry method which is optimized and can transplant to the client based on analyzing the method of massive data inquiry, combing with the query optimized method based on the cost function. At last, we apply this theory in cable monitoring system in Beijing of Grid State; it proved that this method is effective on improving the inquiry speed and maintaining a good network-load performance.