{ "format": "dataset-manifest/1", "slug": "music-streaming-sample-database", "version": 1, "seed": "flagship:music-streaming-sample-database:1k", "engine": 2, "engineVersion": "1.0.0", "spec": { "format": "dataset/1", "engine": 2, "slug": "music-streaming-sample-database", "name": "Music streaming sample database", "tagline": "Listeners, tracks, albums, artists, plays, likes, playlists, podcasts, subscriptions and ads for a streaming app.", "description": "A music and podcast streaming service: listeners sign up, play tracks from albums by artists, like and follow, build playlists, download for offline listening, follow podcasts and hear ads. Every play happens after the listener signed up, within their first year; a subscription period runs exactly thirty days and every charge is the price of the one paid tier; podcast progress never passes the length of the episode. Track and album titles are drawn from a word list, and lyrics are not included.", "domain": "media", "shape": "event-log", "useCases": [ "sql-practice", "bi-dashboards", "analytics-demo" ], "keywords": [ "music streaming", "listening history", "playlists", "podcasts", "sample database" ], "locale": "en_US", "license": "CC0-1.0", "version": 1, "seed": "flagship:music-streaming-sample-database", "tables": { "ad_campaigns": { "description": "Rows for the ad_campaigns table.", "rows": 30, "columns": { "id": { "kind": "pk" }, "advertiser_name": { "kind": "company.name" }, "budget": { "kind": "decimal", "min": 1000, "max": 50000, "scale": 2, "distribution": "long-tail" }, "end_date": { "kind": "date", "after": "start_date", "withinDays": 60 }, "start_date": { "kind": "date", "from": "2021-01-01", "to": "2025-10-31" } } }, "ad_impressions": { "description": "Rows for the ad_impressions table.", "rows": 80, "columns": { "id": { "kind": "pk" }, "ad_id": { "kind": "fk", "ref": "advertisements.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" }, "viewed_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" } } }, "advertisements": { "description": "Rows for the advertisements table.", "rows": 120, "columns": { "id": { "kind": "pk" }, "audio_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/ads/]xxxxxxxxxxxx[.mp3]" }, "campaign_id": { "kind": "fk", "ref": "ad_campaigns.id", "skew": "long-tail" }, "duration_seconds": { "kind": "int", "min": 15, "max": 60 }, "target_genre_id": { "kind": "fk", "ref": "genres.id", "skew": "long-tail" } } }, "album_artists": { "description": "Rows for the album_artists table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "album_id": { "kind": "fk", "ref": "albums.id", "skew": "long-tail" }, "artist_id": { "kind": "fk", "ref": "artists.id", "skew": "long-tail" } } }, "albums": { "description": "Rows for the albums table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "cover_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/covers/]########[.jpg]" }, "release_date": { "kind": "date", "from": "1965-01-01", "to": "2025-12-31", "trend": "growing" }, "title": { "kind": "title", "min": 1, "max": 4, "pool": [ "summer", "nights", "blue", "fire", "heart", "city", "lights", "dreams", "gold", "forever", "stranger", "wild", "shadows", "ocean", "rain", "electric", "young", "love", "lost", "home", "road", "sky", "glass", "radio", "diamond", "storm", "paradise", "silence", "motion", "velvet", "midnight", "sunset" ] }, "type": { "kind": "enum", "values": [ "album", "single", "ep", "compilation" ], "weights": [ 45, 35, 15, 5 ] } } }, "alternative_genres": { "description": "Rows for the alternative_genres table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "parent_genre_id": { "kind": "fk", "ref": "genres.id", "skew": "long-tail" }, "sub_genre_id": { "kind": "fk", "ref": "genres.id", "skew": "long-tail" } } }, "artist_follows": { "description": "Rows for the artist_follows table.", "rows": 30, "columns": { "id": { "kind": "pk" }, "artist_id": { "kind": "fk", "ref": "artists.id", "skew": "long-tail" }, "followed_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "artist_socials": { "description": "Rows for the artist_socials table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "artist_id": { "kind": "fk", "ref": "artists.id", "unique": true }, "instagram": { "kind": "pattern", "pattern": "[@]aaaaaaaa" }, "twitter": { "kind": "pattern", "pattern": "[@]aaaaaaaa" }, "website": { "kind": "internet.url" } } }, "artists": { "description": "Rows for the artists table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "bio": { "kind": "enum", "values": [ "Independent artist", "Signed to a major label", "Producer and songwriter", "Touring band", "Solo project" ] }, "image_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/artists/]########[.jpg]" }, "name": { "kind": "title", "min": 1, "max": 3, "pool": [ "velvet", "echo", "neon", "river", "paper", "moon", "static", "golden", "hollow", "wolves", "saints", "tide", "atlas", "kids", "garden", "parade", "ghost", "honey", "avenue", "satellite", "drift", "harbor", "machine", "sparrow", "lantern", "canyon", "cherry", "midnight", "signal", "violet", "thunder", "coast", "mirror", "orbit" ] }, "verified": { "kind": "bool", "trueRate": 0.3 } } }, "audio_features": { "description": "Rows for the audio_features table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "danceability": { "kind": "decimal", "min": 0, "max": 1, "scale": 3, "distribution": "normal" }, "energy": { "kind": "decimal", "min": 0, "max": 1, "scale": 3, "distribution": "normal" }, "loudness": { "kind": "decimal", "min": -30, "max": 0, "scale": 2, "distribution": "high" }, "musical_key": { "kind": "int", "min": 0, "max": 11 }, "tempo": { "kind": "decimal", "min": 60, "max": 200, "scale": 1, "distribution": "normal" }, "track_id": { "kind": "fk", "ref": "tracks.id", "unique": true }, "valence": { "kind": "decimal", "min": 0, "max": 1, "scale": 3, "distribution": "normal" } } }, "devices": { "description": "Rows for the devices table.", "rows": 30, "columns": { "id": { "kind": "pk" }, "last_active": { "kind": "datetime", "from": "2024-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "name": { "kind": "enum", "values": [ "Phone", "Living room", "Work laptop", "Kitchen", "Car", "Bedroom" ], "weights": [ 40, 12, 18, 8, 12, 10 ] }, "os": { "kind": "enum", "values": [ "Android", "iOS", "Windows", "macOS", "Linux", "Other" ], "weights": [ 38, 30, 15, 8, 2, 7 ] }, "type": { "kind": "enum", "values": [ "smartphone", "computer", "smart_speaker", "tv", "car", "tablet" ], "weights": [ 50, 20, 12, 6, 6, 6 ] }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "episode_history": { "description": "Rows for the episode_history table.", "rows": 50, "columns": { "id": { "kind": "pk" }, "episode_id": { "kind": "fk", "ref": "podcast_episodes.id", "skew": "long-tail" }, "played_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "progress_seconds": { "kind": "int", "min": 0, "max": 600 }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "genres": { "description": "Rows for the genres table.", "rows": 24, "columns": { "id": { "kind": "pk" }, "description": { "kind": "enum", "values": [ "Editorial picks weekly", "Mostly user playlists", "Growing fast", "Catalogue staple" ] }, "name": { "kind": "enum", "values": [ "Pop", "Rock", "Hip-hop", "R&B", "Electronic", "Dance", "Jazz", "Classical", "Country", "Folk", "Indie", "Metal", "Punk", "Reggae", "Latin", "K-pop", "Blues", "Soul", "Funk", "Ambient", "Soundtrack", "Gospel", "World", "Lo-fi" ], "unique": true } } }, "listening_history": { "description": "Rows for the listening_history table.", "rows": 1000, "columns": { "id": { "kind": "pk" }, "percentage_played": { "kind": "int", "min": 1, "max": 100, "distribution": "high" }, "played_at": { "kind": "datetime", "from": "2019-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "lyrics": { "description": "Rows for the lyrics table.", "rows": 12, "columns": { "id": { "kind": "pk" }, "content": { "kind": "constant", "value": "Licensed lyrics are not included in this sample." }, "sync_timestamps": { "kind": "constant", "value": "[]" }, "track_id": { "kind": "fk", "ref": "tracks.id", "unique": true } } }, "offline_downloads": { "description": "Rows for the offline_downloads table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "device_id": { "kind": "fk", "ref": "devices.id", "skew": "long-tail" }, "downloaded_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "payment_transactions": { "description": "Rows for the payment_transactions table.", "rows": 40, "columns": { "id": { "kind": "pk" }, "amount": { "kind": "constant", "value": 10.99 }, "payment_method": { "kind": "enum", "values": [ "card", "paypal_wallet", "mobile_carrier", "gift_card" ], "weights": [ 65, 20, 10, 5 ] }, "status": { "kind": "enum", "values": [ "completed", "failed", "refunded" ], "weights": [ 94, 4, 2 ] }, "transaction_date": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "playlist_tracks": { "description": "Rows for the playlist_tracks table.", "rows": 60, "columns": { "id": { "kind": "pk" }, "added_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "playlist_id": { "kind": "fk", "ref": "playlists.id", "skew": "long-tail" }, "position": { "kind": "int", "min": 1, "max": 50 }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" } } }, "playlists": { "description": "Rows for the playlists table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "cover_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/playlists/]########[.jpg]" }, "description": { "kind": "enum", "values": [ "Updated weekly", "My favourites", "For the gym", "Background music" ], "nullable": true, "nullRate": 0.4 }, "is_private": { "kind": "bool", "trueRate": 0.4 }, "name": { "kind": "title", "min": 1, "max": 3, "pool": [ "chill", "workout", "focus", "road", "trip", "party", "sunday", "morning", "late", "night", "study", "summer", "throwback", "favourites", "drive", "rainy", "day", "dinner", "running", "mix", "vibes", "classics", "acoustic", "deep" ] }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "podcast_episodes": { "description": "Rows for the podcast_episodes table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "audio_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/episodes/]xxxxxxxxxxxx[.mp3]" }, "description": { "kind": "enum", "values": [ "Full episode", "Bonus episode", "Trailer", "Interview" ], "weights": [ 70, 15, 5, 10 ] }, "duration_seconds": { "kind": "int", "min": 600, "max": 5400, "distribution": "normal" }, "podcast_id": { "kind": "fk", "ref": "podcasts.id", "skew": "long-tail" }, "release_date": { "kind": "date", "from": "2019-01-01", "to": "2025-12-31" }, "title": { "kind": "title", "min": 2, "max": 5, "pool": [ "why", "the", "future", "of", "money", "inside", "story", "behind", "what", "we", "got", "wrong", "about", "sleep", "work", "cities", "food", "power", "last", "interview", "season", "finale", "part", "one", "two" ] } } }, "podcast_subscriptions": { "description": "Rows for the podcast_subscriptions table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "podcast_id": { "kind": "fk", "ref": "podcasts.id", "skew": "long-tail" }, "subscribed_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "podcasts": { "description": "Rows for the podcasts table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "cover_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/podcasts/]########[.jpg]" }, "description": { "kind": "enum", "values": [ "New episodes every week", "Daily news", "Interviews", "Storytelling series" ] }, "language": { "kind": "enum", "values": [ "English", "Spanish", "Portuguese", "German", "French" ], "weights": [ 65, 14, 8, 7, 6 ] }, "publisher": { "kind": "company.name" }, "title": { "kind": "title", "min": 2, "max": 4, "pool": [ "daily", "brief", "deep", "dive", "history", "hour", "tech", "talk", "money", "matters", "true", "crime", "science", "weekly", "kitchen", "table", "sports", "desk", "mind", "body", "startup", "stories", "world", "news", "comedy", "club" ] } } }, "recommendation_tracks": { "description": "Rows for the recommendation_tracks table.", "rows": 100, "columns": { "id": { "kind": "pk" }, "recommendation_id": { "kind": "fk", "ref": "recommendations.id", "skew": "long-tail" }, "score": { "kind": "decimal", "min": 0, "max": 1, "scale": 3, "distribution": "high" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" } } }, "recommendations": { "description": "Rows for the recommendations table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "algorithm_type": { "kind": "enum", "values": [ "collaborative_filtering", "content_based", "trending", "editorial" ], "weights": [ 45, 30, 15, 10 ] }, "generated_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "search_queries": { "description": "Rows for the search_queries table.", "rows": 50, "columns": { "id": { "kind": "pk" }, "query_text": { "kind": "words", "min": 1, "max": 3, "pool": [ "chill", "beats", "live", "remix", "acoustic", "cover", "piano", "lofi", "jazz", "workout", "sleep", "rain", "sounds", "top", "hits", "2024", "new", "songs", "love", "party", "classic", "rock", "podcast", "news" ] }, "searched_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "subscription_tiers": { "description": "Rows for the subscription_tiers table.", "rows": 1, "columns": { "id": { "kind": "pk" }, "duration_days": { "kind": "constant", "value": 30 }, "name": { "kind": "constant", "value": "premium" }, "price": { "kind": "constant", "value": 10.99 } } }, "track_artists": { "description": "Rows for the track_artists table.", "rows": 24, "columns": { "id": { "kind": "pk" }, "artist_id": { "kind": "fk", "ref": "artists.id", "skew": "long-tail" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" } } }, "track_comments": { "description": "Rows for the track_comments table.", "rows": 10, "columns": { "id": { "kind": "pk" }, "content": { "kind": "enum", "values": [ "This one is on repeat", "Better live", "Underrated", "The bridge though", "Takes me back", "Skip the intro" ] }, "created_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "track_genres": { "description": "Rows for the track_genres table.", "rows": 25, "columns": { "id": { "kind": "pk" }, "genre_id": { "kind": "fk", "ref": "genres.id", "skew": "long-tail" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" } } }, "track_likes": { "description": "Rows for the track_likes table.", "rows": 80, "columns": { "id": { "kind": "pk" }, "liked_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31", "dayProfile": "waking" }, "track_id": { "kind": "fk", "ref": "tracks.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "tracks": { "description": "Rows for the tracks table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "album_id": { "kind": "fk", "ref": "albums.id", "skew": "long-tail" }, "duration_seconds": { "kind": "int", "min": 95, "max": 420, "distribution": "normal" }, "explicit": { "kind": "bool", "trueRate": 0.15 }, "file_url": { "kind": "pattern", "pattern": "[https://cdn.example.com/audio/]xxxxxxxxxxxx[.ogg]", "unique": true }, "title": { "kind": "title", "min": 1, "max": 4, "pool": [ "tonight", "falling", "stay", "run", "dance", "alone", "better", "together", "golden", "hours", "fire", "call", "slow", "dreams", "ghost", "river", "heart", "wild", "down", "higher", "mine", "sweet", "lies", "again", "home", "light", "night", "echo", "feel", "free", "gone", "rain", "shine", "young", "blue", "storm" ] }, "track_number": { "kind": "int", "min": 1, "max": 14 } } }, "user_follows": { "description": "Rows for the user_follows table.", "rows": 30, "columns": { "id": { "kind": "pk" }, "followed_at": { "kind": "datetime", "from": "2021-01-01", "to": "2025-12-31" }, "followed_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" }, "follower_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "user_subscriptions": { "description": "Rows for the user_subscriptions table.", "rows": 12, "columns": { "id": { "kind": "pk" }, "end_date": { "kind": "date", "after": "start_date", "withinDays": 30 }, "start_date": { "kind": "date", "from": "2021-01-01", "to": "2025-11-30" }, "tier_id": { "kind": "fk", "ref": "subscription_tiers.id", "skew": "long-tail" }, "user_id": { "kind": "fk", "ref": "users.id", "skew": "long-tail" } } }, "users": { "description": "Rows for the users table.", "rows": 20, "columns": { "id": { "kind": "pk" }, "country": { "kind": "enum", "values": [ "United States", "United Kingdom", "Germany", "Brazil", "Mexico", "France", "Canada", "Australia", "Japan", "India", "Turkey", "Spain" ], "weights": [ 30, 9, 8, 9, 6, 6, 5, 4, 5, 8, 4, 6 ] }, "created_at": { "kind": "datetime", "from": "2019-01-01", "to": "2024-12-31", "trend": "growing" }, "email": { "kind": "internet.email", "unique": true }, "password_hash": { "kind": "pattern", "pattern": "[$2b$12$]xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" }, "username": { "kind": "internet.username", "unique": true } } } } }, "counts": { "ad_campaigns": 30, "albums": 10, "artists": 10, "album_artists": 10, "artist_socials": 10, "genres": 24, "advertisements": 120, "alternative_genres": 20, "podcasts": 10, "podcast_episodes": 10, "subscription_tiers": 1, "tracks": 20, "audio_features": 20, "lyrics": 12, "track_artists": 24, "track_genres": 25, "users": 20, "ad_impressions": 80, "artist_follows": 30, "devices": 30, "episode_history": 50, "listening_history": 1000, "offline_downloads": 20, "payment_transactions": 40, "playlists": 10, "playlist_tracks": 60, "podcast_subscriptions": 10, "recommendations": 20, "recommendation_tracks": 100, "search_queries": 50, "track_comments": 10, "track_likes": 80, "user_follows": 30, "user_subscriptions": 12 }, "artifacts": [ { "file": "csv/ad_campaigns.csv", "format": "csv", "table": "ad_campaigns", "key": "datasets/music-streaming-sample-database/v1/csv/ad_campaigns.csv", "url": "https://database-sample-website.s3.eu-north-1.amazonaws.com/datasets/music-streaming-sample-database/v1/csv/ad_campaigns.csv", "bytes": 1741, "sha256": "02f4527d68476d6fd6d9deb83f9c58f5f99662b9785a7b19fae7488299284482", "rows": 30, "contentType": "text/csv; charset=utf-8" }, { "file": "csv/albums.csv", "format": "csv", "table": "albums", "key": "datasets/music-streaming-sample-database/v1/csv/albums.csv", "url": "https://database-sample-website.s3.eu-north-1.amazonaws.com/datasets/music-streaming-sample-database/v1/csv/albums.csv", "bytes": 829, "sha256": "0f583b34c59837986bdd849e58c4b1f18505b4bd2d68a58d672a38daf0fb9e53", 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"application/zip" } ] } }, "1m": { "rows": 1761995, "counts": { "ad_campaigns": 30, "albums": 2000, "artists": 1000, "album_artists": 2500, "artist_socials": 1000, "genres": 24, "advertisements": 120, "alternative_genres": 20, "podcasts": 300, "podcast_episodes": 6000, "subscription_tiers": 1, "tracks": 20000, "audio_features": 20000, "lyrics": 12000, "track_artists": 24000, "track_genres": 25000, "users": 20000, "ad_impressions": 80000, "artist_follows": 30000, "devices": 30000, "episode_history": 50000, "listening_history": 1000000, "offline_downloads": 20000, "payment_transactions": 40000, "playlists": 6000, "playlist_tracks": 60000, "podcast_subscriptions": 10000, "recommendations": 20000, "recommendation_tracks": 100000, "search_queries": 50000, "track_comments": 10000, "track_likes": 80000, "user_follows": 30000, "user_subscriptions": 12000 }, "notes": [ "At this size the tables beside listening_history were cut to 1/16 of it, so the whole build stays under 3,000,000 rows." ], 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users u ON u.id = lh.user_id WHERE lh.played_at < u.created_at" }, { "name": "A subscription period is exactly thirty days", "sql": "SELECT count(*) AS violations FROM user_subscriptions WHERE end_date - start_date <> 30" }, { "name": "Every charge is the price of the paid tier", "sql": "SELECT count(*) AS violations FROM payment_transactions WHERE amount <> (SELECT price FROM subscription_tiers LIMIT 1)" }, { "name": "Podcast progress never passes the episode", "sql": "SELECT count(*) AS violations FROM episode_history h JOIN podcast_episodes e ON e.id = h.episode_id WHERE h.progress_seconds > e.duration_seconds" }, { "name": "An ad campaign ends after it starts", "sql": "SELECT count(*) AS violations FROM ad_campaigns WHERE end_date < start_date" }, { "name": "One set of audio features, and one lyrics row, per track", "sql": "SELECT (SELECT count(*) - count(DISTINCT track_id) FROM audio_features) + (SELECT count(*) - count(DISTINCT track_id) FROM lyrics) AS violations" } ] }, "publishedAt": 1791326429341, "updatedAt": 1791326429341 }