Projects allow users to set general metadata at the project level. Resources that are grouped under a Project will “inherit” the Project-level metadata automatically, saving users from having to enter repetitious metadata at the Resource level. Resource level metadata can be customized for each resource, allowing more specific information to be used for individual files or resources.
For example, if all your resources deal with the period from 200-1450 A.D., you can set the Project “Temporal Coverage” field accordingly. Now every resource added to the project will be able to inherit the “Temporal Coverage” field from the Project, without needing to re-enter “200-1450 A.D.” for every resource. When a project is updated, all of the associated individual resources are automatically updated as well.