Which SQL statement is used to delete data from a database?

The SQL statement used to delete data from a database is the DELETE statement. Here is a step by step guide on how to use it:

1. First, you need to identify the table from which you want to delete data. For example, let's say we have a table named "Students".

2. Next, you need to specify the condition for the data that should be deleted. For instance, if you want to delete the record of a student with the ID of 123, your condition would be "WHERE ID = 123".

3. Now, you can construct your SQL DELETE statement. Following the above example, it would look like this: "DELETE FROM Students WHERE ID = 123".

4. Finally, you would run this SQL statement in your database management system to delete the specified data.

Please note that you should be very careful when using the DELETE statement, as it permanently removes data from your table. If you delete data by mistake, it cannot be recovered.