back to course
Lesson 78 / 15750%
Indexing4/5
Unique Index
Prevent duplicate emails and usernames by enforcing uniqueness constraints at the database level with unique indexes.
This lesson is Pro only.
Unlock every premium lesson and module — Pro from ₹299 / month (or ₹999 / year, saves ~₹2,589).
Sign in to unlock// feedback.matters()
Did this lesson help you?