Which of the following is not a DDL command ?UPDATENone of the MentionedTRUNCATEALTER

Break Down the Problem

1. Identify the definition and purpose of Data Definition Language (DDL) commands.
2. List the provided options to determine which is not a DDL command.

Relevant Concepts

1. Data Definition Language (DDL): This component of SQL includes commands like CREATE, ALTER, and DROP, which are used to define and manage all structures in a database.
2. Common DDL Commands:
   • CREATE: Used to create objects in the database.
   • ALTER: Used to modify existing database objects.
   • DROP: Used to delete objects from the database.
   • TRUNCATE: Used to remove all records from a table without logging individual row deletions.

Analysis and Detail

1. UPDATEN: This command is actually a part of Data Manipulation Language (DML), which is used for modifying data within objects.
2. None of the Mentioned: This option suggests that all provided options are DDL commands, which needs to be examined.
3. TRUNCATE: As mentioned, this is a valid DDL command.
4. ALTER: This is also a valid DDL command.

Verify and Summarize

Upon analyzing all the commands:

• UPDATE is indeed a DML command, while TRUNCATE and ALTER are DDL commands. The option "None of the Mentioned" suggests incorrect statements as there is at least one DML command present.

Final Answer

The command that is not a DDL command is UPDATE.