CREATE TABLE tags(
    id SERIAL PRIMARY KEY,
    name TEXT UNIQUE NOT NULL
);

CREATE TABLE posts(
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL,
    slug TEXT UNIQUE NOT NULL,
    description TEXT NOT NULL,
    content TEXT NOT NULL,
    published_at DATE NOT NULL,
    edited_at DATE,
    active BOOLEAN NOT NULL
);

CREATE TABLE post_tags(
    id SERIAL PRIMARY KEY,
    post_id INTEGER NOT NULL REFERENCES posts(id),
    tag_id INTEGER NOT NULL REFERENCES tags(id)
);