What’s the difference between a primary key and unique identifier?

19 Views

What’s the difference between a primary key and unique identifier?

Kamendra kumar 17th Feb, 2022

Answer

Answer Later

Report

Answer (1)

Kamendra kumar 17th Feb, 2022

A unique identifier uniquely identifies each row in the table containing data while a primary key can only contain blanks, numbers, or a combination of both. Unique identifiers must not be nullable and cannot allow duplicate values.

Like Share

Related Questions

difference between primary key unique constraints

59 Views

what is the difference between primary key and foreign key in database.

34 Views

What is difference between primary key and foreign key in database?

54 Views

Whats the difference between primary and secondary exams of AIEESE?WHATS the date of application and exams?

318 Views

Whats the key difference between the IB Board and the CBSE?

19 Views

Applications for Admissions are open.

VIT Bhopal University | M.Tec...

Apply

M.Tech admissions open @ VIT Bhopal University | Highest CTC 52 LPA | Apply now

Amity University | M.Tech Adm...

Apply

Ranked amongst top 3% universities globally (QS Rankings).

Amity University Noida MBA Ad...

Apply

Amongst top 3% universities globally (QS Rankings)

Graphic Era (Deemed to be Uni...

Apply

NAAC A+ Grade | Among top 100 universities of India (NIRF 2024) | 40 crore+ scholarships distributed

XAT- Xavier Aptitude Test 2026

Apply

75+ years of legacy | #1 Entrance Exam | Score accepted by 250+ BSchools | Apply now

Amity University Noida B.Tech...

Apply

Among Top 30 National Universities for Engineering (NIRF 2024) | 30+ Specializations | AI Powered Learning & State-of-the-Art Facilities

View All Application Forms

Trending Articles/News

Download the Careers360 App on your Android phone

Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile

150M+ Students

30,000+ Colleges

500+ Exams

1500+ E-books