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What is the 'main' purpose of polyinstantiation?
To make a copy of one object and modify the attributes of the second copy
To create different objects that responds differently to the same input
To create different objects that will take will work on inheritance mechanism.
Polyinstatiation aims to make a copy of one object and modify the attributes of the second copy. more detail In databases, polyinstantiation is database-related SQL (structured query language) terminology. It allows a relation to contain multiple rows with the same primary key; the multiple instances are distinguished by their security levels.[3] It occurs because of mandatory policy. Depending on the security level established, one record contains sensitive information, and the other one does not, that is, a user will see the record's information depending on his/her level of confidentiality previously dictated by the company's policy
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