1. A system comprising: database system software stored on a non-transitory data storage medium for execution by at least one processor associated with a database system, the database system software operable to cause: processing, using the database system, a first request to share a private file with a community, the community being a shared online resource accessible only to a plurality of community members added by a community owner; storing, using the database system, the private file as a first one of a plurality of community files in a community library maintained in at least one database of the database system on behalf of the community, the community files configured to allow only at least one designated community member to update the community files, the first community file capable of being updated with activity stream updates capable of being identified in an activity stream associated with the community library, the activity stream provided to inform the community members of activity associated with the community; displaying, at a user device of a first community member, at least a portion of the activity stream in a user interface, the portion of the activity stream comprising a first activity stream update identifying the first community file; processing, using the database system, a second request to update the first community file, the second request received from the user device on behalf of the first community member; responsive to processing the second request, identifying, using the database system, at least one of a plurality of access roles for the first community member, the access roles comprising at least one of: an editor role, a contributor role, or a reader role; determining, using the database system, that the identified access role is the editor role or the contributor role; responsive to determining that the identified access role is the editor role or the contributor role, updating, using the database system, the first community file with a first update; and displaying, at the user device in the activity stream, a second activity stream update identifying the first update to the first community file.