在MySQL中,使用CREATE DATABASE语句创建数据库db_test后,该数据库并不会自动成为当前数据库。如果想让它成为当前数据库,需要使用MySQL提供的USE语句来实现,USE语句可以实现选择一个数据库,使其成为当前数据库。只有使用USE语句指定某个数据库为当前数据后,对该数据库及其存储的数据对象执行操作。语句为: A. USE db_test;
【简答题】This brief book is aimed at high school students, but speaks to anyone learning at any stage of life. Its formal, serious style closely matches its content, a school-ly book on schooling. The au...
【简答题】This brief book is aimed at high school students, but speaks to anyone learning at any stage of life. Its formal, serious style closely matches its content, a school-ly book on schooling. The au...