Giving someone “Can View” access allows the person to only view the asset and its contents.
Here are some more details for specific assets:
Catalogs
Viewers of a catalog are not allowed to:
Update the catalog
Delete the catalog
Remove assets (songs, files, recordings, etc) from the catalog
Add assets (songs, files, recordings, etc) to the catalog
Songs
Viewers of a song are not allowed to:
Update the song
Delete the song
Edit the publishing information for the song in any way