SQL Quiz
10 questions · no time limit
0:00
DATABASE DESIGN
Question 1 of 10
No time limit
Current
Answered
Flagged
Not seen
PASSAGE
A publishing platform allows comments on either articles or photos. Every article and photo is a kind of content item, and a comment must reference exactly one existing content item. The database must enforce this relationship with foreign keys rather than relying on application-only checks.
Which conceptual key design best supports the requirement?
YOUR PROGRESS
10
QUESTIONS
Ready when you are
Answer in any order. Your progress shows here as you go.
QUESTIONS
KEYBOARD
Pick an answer ABCD
Next question ↵→
Previous ←
Flag for review F
Answers save as you go · flagged questions come back at the end