What value represents missing, unknown, or inapplicable data in a relational database? MCQ with Answer and Explanation

Explanation:
UPDATE is a DML statement because it is used to modify existing data values within rows of a database table, rather than modifying the structural schema.

Explanation:
TRUNCATE TABLE removes all rows and is a DDL operation with minimal logging, often faster than DELETE without WHERE.

Explanation:
The correct syntax for UPDATE is: UPDATE table_name SET column1 = value1 WHERE condition;