-- 1
CREATE SCHEMA raw;
CREATE SCHEMA core;
CREATE SCHEMA dm;

-- 2
--DROP TABLE IF EXISTS raw.users;
CREATE TABLE raw.users (
	id bigint NOT NULL,
	name varchar(100),
	age SMALLINT,
	email varchar(100),
	registration_date timestamptz
);

--DROP TABLE IF EXISTS raw.courses;
CREATE TABLE raw.courses (
	id bigint NOT NULL,
	title varchar(150),
	category varchar(50),
	created_at timestamptz
);

--DROP TABLE IF EXISTS raw.lessons;
CREATE TABLE raw.lessons (
	id bigint NOT NULL,
	course_id bigint,
	title varchar(150),
	duration_min SMALLINT
);

--DROP TABLE IF EXISTS raw.enrollments;
CREATE TABLE raw.enrollments (
	id bigint NOT NULL,
	user_id bigint,
	course_id bigint,
	enrolled_at timestamptz
);

--DROP TABLE IF EXISTS raw.lesson_views;
CREATE TABLE raw.lesson_views (
	id bigint NOT NULL,
	user_id bigint,
	lesson_id bigint,
	viewed_at timestamptz
);