Q 18. What is Auto Increment ?
Ans : Sometimes, while creating a table, we do not have a unique identifier within the table, hence we face difficulty in choosing Primary Key.
So as to resolve such an issue, we’ve to manually provide unique keys to every record, but this is often also a tedious task.
So we can use the Auto-Increment feature that automatically generates a numerical Primary key value for every new record inserted. The Auto Increment feature is supported by all the Databases.
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