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"On the other hand, the Internet is a huge stockpile of (mostly) freely available information, and in order to access that information, we often have to supply some information about ourselves for various purposes ranging from advertising (to keep the information free) to customising the information required in order to increase its relevance. An example of the latter might be an online stock portfolio site, where information about a user’s stock portfolio has to be supplied so that the user can access a tailor made page with relevant information about those stocks and to track their value." (Source)
"Note that the individual who acts on behalf of the designated role may be given special rights and/or obligations during the rest of the workflow process. In figure 1 any employee may submit a claim; however, it is likely that only the specific employee who submitted the claim should be authorised to track the status of the claim processing (apart from managers and other roles who have this authority in any case). To handle this, a special role can be created for any individual who acts in a workflow. In figure 1 the clause as Claimant is intended to indicate that the individual who initiates this process will be in the Claimant role for the duration of this process. If roles are properly structured it also becomes possible to specify that the approval event can be initiated by a manager of the claimant (that is, someone in the role Manager(Claimant)), excluding the possibility that a manager (who is also an employee) can submit and approve a claim." (Source)
"If local policies are supported, the shortest distance principle does not necessarily apply: If a site denies subject s local access to some subtree for which global access has been granted higher in the lattice, the local denial should not override the global positive authorization — as long as there is some site that contains the subtree where a negative rule has not been specified. The same occurs when two local rules are combined, if none is more specific than the other, then the positive rule wins, unless both rules are in the same site." (Source)
"Since the structure of the class is only to be shared with those sites trusted enough by the site owning the class, an object can clearly only be instantiated at sites acceptable to the owner of the class. The set of such sites depends on the classification level (sensitivity) of the class. Further, once instantiated, the object cannot be relocated to a site where it could not have been instantiated in the first place." (Source)