create:
create database database name; //Create database
create database if not exists database name; //Create database and add judgment (if it exists, don’t create it, if it doesn’t exist, create it)
create database database name default charset character set; //Create database and set character set
Inquire:
show database; //View all databases
show database(); //View the current database (meaning: which database you are currently entering)
show databses; //View the currently created database
delete:
drop database database name; //delete database
drop database if exists database name; //Delete database and add judgment
Use or to switch:
use database name;