drop table users;
drop table role;
create table role
(id number primary key not null,
is_admin number not null);

create table users
(name varchar(20) not null,
passhash nvarchar2(20) not null,
id number(19, 0) not null,
user_id number primary key,
role_id number references role(id));

create table account_type
(id number primary key not null,
type varchar2(20) not null,
constraint check_type check (type in ('savings', 'checking', 'interest')));
--
--create table "user_accounts"
--(id number primary key not null,
--balance number,
--user_id number references user(id),
--account_type_id references account_type(id)
--);

create table transactions
(id number primary key not null,
message nvarchar2(500),
user_id number references user(id));