And so no user U2 can see B but not A
Can you please explain the orange part?
In the case of mandatory control, by contrast, each data object is labeled with a certain classification level, and each user is given a certain clearance level. A given data object can then be accessed only by users with the appropriate clearance. Mandatory schemes thus tend to be hierarchic in nature and hence comparatively rigid (if user U1 can see A but not B, then the classification of B must be higher than that of A. and so no user U2 can see B but not A).
Top answer
The writer is elucidating what he means by "hierarchic". Any user who can see an object that requires higher clearance can also see all the objects that require lower clearance.
- The writer is elucidating what he means by "hierarchic".
- Any user who can see an object that requires higher clearance can also see all the objects that require lower clearance.
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The writer is elucidating what he means by "hierarchic". Any user who can see an object that requires higher clearance can also see all the objects that require lower clearance.
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