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ALTER TABLE Command: This command is used for variation of existing structure of the table in the given situation:
Syntax
ALTER TABLE
You require to put many constraints like that the database integrity is not compromised.
why we fregment at all?
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what problems are raised by the database? why is it so controversial? why is data quality an issue?
recovey techniques based on deferred update and immediate update
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random file orgnization
sql is relationally complete-justify
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