Which SQL statement permanently removes a table's definition and all of its data from a relational database, making the table unrecoverable unless a backup is restored?
ALTER TABLE table_name DROP COLUMN column_name;
DELETE FROM table_name;
DROP TABLE table_name;
TRUNCATE TABLE table_name;
DROP TABLE deletes both the table structure and all associated rows, indexes, and constraints, freeing the storage space. Because the definition itself is removed, the table cannot be queried or restored except by loading a previous backup. DELETE FROM removes only selected rows (or all rows if no WHERE clause) but leaves the table intact. TRUNCATE TABLE quickly empties all rows but still preserves the table structure. ALTER TABLE … DROP COLUMN modifies an existing table by deleting a single column rather than the entire table.
Bash is our AI bot, trained to help you pass your exam. AI Generated Content may display inaccurate information, always double-check anything important.
All IT & Cybersecurity Package plans include the following perks and exams .
Our pricing is simple. Full access to all certifications and exams in each package, for one price.
As many practice tests for as many topics as you want.
Use study mode non-stop, no limits.
Access to our AI assistant, Bash, trained to help you pass your exam.
Track your scores over time in study mode and report cards.
See how you improve over time, and where you need to focus.
Access our store with even bigger discounts than before.
Unlimited access to all performance questions and be prepared for the real thing.
All IT & Cybersecurity Package plans include unlimited access to the following study materials.
Create an account or sign in to access our study materials.