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What are the advantages of object ID?
The main advantages of Object IDs are as below:
i) IDs are not changing
ii) IDs are completely independent of the changes in data value and the physical location
iii) IDs provide uniform mechanism for referencing objects.
need to get answer for questions 3&4 on this page in part 1
A set of possible data values is called? A set of possible data values is called as domain.
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