Which of the following is a feature of SQL? MCQ with Answer and Explanation

Explanation:
CHECK, PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL are all constraints in SQL.

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

Explanation:
A Deletion Anomaly occurs when the deletion of a specific data record unintentionally deletes other distinct, unrelated information that should have been preserved.