create table Tag
(
	id integer primary key autoincrement,
    parent_id integer,
	name varchar(127) not null,
    description varchar(127),
    sces blob
);

create table Scenario
(
    id integer primary key autoincrement,
    sid varchar(32) not null,
    name varchar(127) not null,
    pic varchar(255),
    map_feature varchar(127),
    method varchar(255),
    standard varchar(255),
    others varchar(255),
    failure varchar(255),
    tags blob,
    date_created integer default (strftime('%s', 'now')) not null
);