1. 접근 권한 부여
create user '[ID]'@'[IP]' identified by '[PW]';
grant all privileges on [ID].* to '[ID]'@'[IP]';
또는
grant all privileges on [ID].* to '[ID]'@'[IP]' identified by '[PW]';
flush privileges;
2. 접근 권한 해제
revoke all privileges on [ID].* from '[ID]'@'[IP]';
3. 계정 삭제
DROP USER '[ID]'@'[IP]';