建立拖网数据库系统的目的与意义拖网是我国海洋渔业生产中渔获量最大的一种渔具,因此,对拖网的分析研究、改进和设计乃是一项十分重要的工作.建立拖网数据库系统是为尽可能多的将我国各沿海省市国营渔业公司在生产中使用的拖网数据存贮于该系统中,除了在建立本系统时已存贮的拖网数据外,该系统还能方便地添加新的拖网数据,能在所存贮的全部拖网记录中快 Purpose and Significance of Establishing Trawl Database System Trawling is a kind of fishing gear with the largest catch in marine fishery production in our country.Therefore, it is a very important task to analyze, improve and design trawl.Track trawl database system is a As much as possible, the trawl data used by the State-owned fishery companies in coastal provinces and municipalities in their production are stored in the system. In addition to the trawl data already stored at the time of establishment of the system, the system can also conveniently add new Trawl data can be stored quickly in all trawl records