The Research On Method Of Database Search Based On P2P Search Engine

In current information time, the key-words based search engineering, such as Google, Baidu, Yahoo and etc. have become a common way of people when looking for information in daily life. No matter what people want to search, as long as he can provide search key words, the search engineering can ask the client for all the relevant links and show it on the page according to the relevance.However, most internet search engineering targets are static page, but during the network practice, most useful data are usually saved in background database and can't be found by search engineering directly. The key content of the essay is to discuss how to search for relevant information from database according to the key words that user provide.The essay, based on P2P database search engineer, introduces P2P relevant concept and technology, including one of the P2P network platforms JXTA. The essay focuses on the basic method of database search and makes some improvement based on current progressive scan search method. The improvement include side-table based progressive scan and SQL language based progressive scan. The two methods reduce the time of data scan and increase the efficiency of database search. Finally, the essay make a detail analysis of SQL language based progressive scan database search method and make it become practical.