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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.
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
why are older data models are being replaced by new data models
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What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
how to design tables
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