>_
SWE Maxx
Questions
Quizzes
Daily challenge
System design
My attempts
Sign in
☀
☾
Light mode
Dark mode
Loading question…
Sign in
Which constraint prevents duplicate permitted key values under the database's null-handling rules? | SWE Maxx
← Question bank
SQL and relational databases · Multiple Choice
Difficulty: Medium
Which constraint prevents duplicate permitted key values under the database's null-handling rules?
Constraints
Data integrity
Choose your answer
A
CHECK
B
NOT NULL
C
UNIQUE
D
PRIMARY KEY
Check answer
More in SQL and relational databases →