Oracle's DELETE and DROP commands are used to delete data, but in different ways: DELETE deletes specific rows in the table that meet the conditions and can recover deleted data. DROP deletes the entire table or other database objects, permanently deleting the data and making it irrecoverable.
The difference between DELETE and DROP in Oracle
In Oracle, DELETE and DROP are used to delete data Both commands, but work differently between them.
DELETE
- DELETE command is used to delete specific rows from a table.
- It requires a WHERE clause to specify the rows to be deleted.
- Delete only rows that meet the WHERE clause conditions.
- Deleted rows are not physically deleted, but marked as deleted. This allows deleted rows to be restored via an UNDO DELETE operation if needed.
DROP
- The DROP command is used to delete a table, view, or other database object.
- It does not require a WHERE clause.
- The deleted object and all related data will be permanently deleted.
- Objects deleted through the DROP command cannot be recovered.
Summary
- DELETE is used to delete specific rows in a table, while DROP is used to delete an entire table or other database object.
- DELETE is reversible, while DROP is irreversible.
- When using DELETE, you need to specify conditions, but DROP does not.
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