To perform a delete on a single-table, how is the name of a column qualified?

Answer: Option A

This question asks about how we specify a column when deleting data from a single table in MySQL.
Let's break down the options:
Option A: qualification not necessary
This is incorrect. When deleting data, you usually need to specify which column you are working with.

Option B: column name
This is the correct answer. You typically use the column name directly in your DELETE statement to indicate which column's data you want to delete.

Option C: table name
While you need to specify the table name in your DELETE statement, it's not used to qualify a column name. The table name is used to indicate which table you're working with.

Option D: database name
The database name is rarely needed when deleting data from a specific table. You usually work within the context of a specific database.

Therefore, the answer is Option B: column name.