music-kraken-core/src/metadata/database_structure.sql

DROP TABLE IF EXISTS artist;
CREATE TABLE artist (
    id TEXT PRIMARY KEY NOT NULL,
    name TEXT
);

DROP TABLE IF EXISTS artist_release_group;
CREATE TABLE artist_release_group (
    artist_id TEXT NOT NULL,
    release_group_id TEXT NOT NULL
);

DROP TABLE IF EXISTS artist_track;
CREATE TABLE artist_track (
    artist_id TEXT NOT NULL,
    track_id TEXT NOT NULL
);

DROP TABLE IF EXISTS release_group;
CREATE TABLE release_group (
    id TEXT PRIMARY KEY NOT NULL,
    albumartist TEXT,
    albumsort INT,
    musicbrainz_albumtype TEXT,
    compilation TEXT,
    album_artist_id TEXT
);

DROP TABLE IF EXISTS release_;
CREATE TABLE release_ (
    id TEXT PRIMARY KEY NOT NULL,
    release_group_id TEXT NOT NULL,
    title TEXT, 
    copyright TEXT,
    album_status TEXT,
    language TEXT,
    year TEXT,
    date TEXT,
    country TEXT,
    barcode TEXT
);

DROP TABLE IF EXISTS track;
CREATE TABLE track (
    id TEXT PRIMARY KEY NOT NULL,
    downloaded BOOLEAN NOT NULL DEFAULT 0,
    release_id TEXT NOT NULL,
    track TEXT,
    isrc TEXT,
    filepath TEXT,
    url TEXT,
    src TEXT
);