How a music streaming service models its data: artists, albums and tracks, credited roles on a track, ordered playlists with collaborators, saved library, offline downloads and an append-only play log.
How a video streaming service models its data: films and series in one titles table, seasons and episodes, profiles inside an account, resume positions, per-region licensing windows, My List, ratings and subtitle tracks.
How a book cataloguing site models its data: works split from editions and ISBNs, contributors with roles, default and custom shelves, reading progress, ratings and reviews, series ordering and a friend activity feed.
A content management schema that survives contact with editors: posts with an append-only revision history, categories and tags, threaded comments, a real media library, slug redirects and a double opt-in newsletter list.
How a digital newspaper models a metered paywall: articles with revisions, the per-reader meter, plans and subscriptions, gift links, newsletters and moderated comments.