A multilevel security model for object-oriented database systems

نویسنده

  • Linda M. Null
چکیده

ing superclasses Objects in an object-oriented database have various relationships which have been discussed. If the designer is aware of these relationships during the design phase, many of these relationships can be exploited. For example, STUDENT is related to PERSON in that all students are people, so the commonalities between the two are extracted and placed in the class PERSON. The subclass STUDENT is then created and inherits all the attributes of PERSON.

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تاریخ انتشار 2015