| 摘要 |
A system for accessing digital assets. The system includes an access control mechanism that permits specification of one of a number of kinds of access by a particular user to a particular asset. The access control mechanism permits determination of what assets a given user may access quickly enough so that the determination may be made every time a user performs an operation on an asset. The user interface for the system is thus able to show a given user only those assets to which the user currently has access. The assets have owners and the assets belonging to an owner are organized into a hierarchy belonging to the owner. The owner of an asset may give other users access to individual assets. Such assets are termed shared assets. Once a user has logged onto the system, the user can access his own assets and those that have been shared with him without further credentials. When a user has access to a shared asset, the user interface for the system shows only that portion of the owner's hierarchy which is necessary for the user to reach the shared asset. The user interface further indicates whether a user has seen an asset since the user was given access to it.
|
