Discussion
Which of the following is an example of a Data Definition Language (DDL) command ?
Answer: C
The DDL command is CREATE.
Data Definition Language commands define and change the structure of database objects: CREATE, ALTER, DROP, TRUNCATE and RENAME.
SELECT, INSERT and UPDATE work on the data inside tables, so they are Data Manipulation Language (DML) commands (SELECT is sometimes classed as DQL).
DDL changes are usually auto-committed, so they cannot be rolled back the way DML changes can in a transaction.
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