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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.
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Express the following queries in SQL: (a) Write the SQL code that will create ALL the four tables given in the appendix. Your answer should not contain the primary key and
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it can be possible to create any table without primary key
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