SQL Fundamentals

Constraints and Data Integrity

Choose NOT NULL, UNIQUE, CHECK, primary-key, and foreign-key constraints from concrete integrity rules and verify both accepted and rejected writes.

Intermediate14 min read

SQL Fundamentals lessonRelational data foundationsProve

TIMED ASSESSMENT

Constraints and Data Integrity

Questions and answer choices are randomized for every attempt. Everything needed to answer is shown on screen; no paper, calculator, terminal, server, or external test is required. Each answer is marked Correct or Incorrect, then locked until the final review.

15 questions20 min timer12/15 to pass

Explanations are hidden during the test. A full review is available only after submission.