Appendix S-1: Global schema of the YOU TUBE COM system

Global Entities (36)

Entity	Alias	Module	Global Schema
(1) Ad	Ad	AdModule	YouTubeCom
(2) AdImpression	*AdImpression*	UserModule	YouTubeCom
(3) AudienceMetric	*AudienceMetric*	ChannelModule	YouTubeCom
(4) BlockedUser	*BlockedUser*	LiveStreamModule	YouTubeCom
(5) Caption	*Caption*	CommentModule	YouTubeCom
(6) Category	*Category*	AdModule	YouTubeCom
(7) Channel	*Channel*	ChannelModule	YouTubeCom
(8) ChannelMember	*ChannelMember*	UserModule	YouTubeCom
(9) ChannelSetting	*ChannelSetting*	ChannelModule	YouTubeCom
(10) Comment	*Comment*	CommentModule	YouTubeCom
(11) CommentLike	*CommentLike*	CommentModule	YouTubeCom
(12) CommentReport	*CommentReport*	UserModule	YouTubeCom
(13) DailyVideoMetric	*DailyVideoMetric*	PlaylistModule	YouTubeCom
(14) Device	*Device*	DeviceModule	YouTubeCom
(15) LiveChatMessage	*LiveChatMessage*	LiveStreamModule	YouTubeCom
(16) LiveStream	*LiveStream*	LiveStreamModule	YouTubeCom
(17) Notification	*Notification*	AdModule	YouTubeCom
(18) Playlist	*Playlist*	PlaylistModule	YouTubeCom
(19) PlaylistVideo	*PlaylistVideo*	PlaylistModule	YouTubeCom
(20) SearchQuery	*SearchQuery*	UserModule	YouTubeCom
(21) Subscription	*Subscription*	ChannelModule	YouTubeCom
(22) Tag	*Tag*	VideoModule	YouTubeCom
(23) Thumbnail	*Thumbnail*	CommentModule	YouTubeCom
(24) User	*User*	UserModule	YouTubeCom
(25) UserFavorite	*UserFavorite*	DeviceModule	YouTubeCom
(26) UserFeedItem	*UserFeedItem*	ChannelModule	YouTubeCom
(27) UserProfile	*UserProfile*	PlaylistModule	YouTubeCom
(28) UserSession	*UserSession*	DeviceModule	YouTubeCom
(29) Video	*Video*	VideoModule	YouTubeCom
(30) VideoAd	*VideoAd*	AdModule	YouTubeCom
(31) VideoLike	*VideoLike*	VideoModule	YouTubeCom
(32) VideoReport	*VideoReport*	VideoModule	YouTubeCom
(33) VideoTag	*VideoTag*	VideoModule	YouTubeCom
(34) VideoView	*VideoView*	DeviceModule	YouTubeCom
(35) WatchHistory	*WatchHistory*	VideoModule	YouTubeCom
(36) WatchLater	*WatchLater*	UserModule	YouTubeCom

Modules (8)

3.1 AdModule	3.2 ChannelModule	3.3 CommentModule	3.4 DeviceModule	3.5 LiveStreamModule	3.6 PlaylistModule
3.7 UserModule	3.8 VideoModule