*如果是对象权限,就加入with grant option *grant select on emp to xiaoming with grant option; 如果是系统权限,就加 grant connect to xiaoming with admin option; #使用profile 管理用户口令:profile是口令限制,资源限制的命令集合,当建立数据库时,oracle就会自
一、编写一个操作父类 usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingSystem.Text;usingSystem.Threading.Tasks;namespace多态计算器 {//////计算父类///classOperation {publicintNumA {get;set; }publicintNumB {get;set; }publicOperation(intnumA,intnumB) {this.NumA =numA;this.NumB =...