Using this method, a connection is created each time you access the database from your program, thereby incurring a substantial processing overhead.
通过该方法,每当您从程序访问数据库时,都要创建连接,从而招致大量的处理开销。
There are both internal connection and substantial difference between the modern logistics and the traditional freight transportation plus storage.
现代物流同传统货运与仓储既有内在联系又有本质区别。
应用推荐