目标：1. 创建角色test1_role, 授予 CREATE PROCEDURE, CREATE SEQUENCE, CREATE SYNONYM, CREATE TABLE, CREATE TRIGGER, CREATE TYPE, CREATE VIEW 权限
2. 创建用户test1_user, 授予 test1_role 角色
create role test1_role;
grant CREATE PROCEDURE, CREATE SEQUENCE, CREATE SYNONYM, CREATE TABLE, CREATE TRIGGER, CREATE TYPE, CREATE VIEW to test1_role;
create user test1_user identified by <password> ;
grant test1_role to test1_user;