What are the difference between primary key and object identifier?
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I don't know this equation
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Answer:Primary key is used in Relational Databases where as OIDs are used in object oriented databases
Explanation:
1. Primary key is part of the table row where as OID has the meta information about the object
2. Moving the row also moves the reference of the primary key where as moving of object explicitly requires updation of object id reference.
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