A key in DBMS is an attribute or set of attribute which is used to uniquely identify a couple in a table.
Types of Keys
Super key
Candidate key
Primary key
Alternate key
Unique Key
Foreign Key

Like Share and Subscribe

............................................
Telegram (Zeenat Hasan Academy) https://t.me/zeenathasanacademy
.............................................
Instagram (zeenat_hasan_official)   / zeenat_hasan_official  
............................................................
Facebook Page (Zeenat Hasan Computer's Subject Learning)
  / zeenathasancomputerssubjectlearning22...  
........................................
Twitter (Zeenat Hasan 4)
https://twitter.com/Zeenathasan4?s=09


Playlist Computer Architechture
   • Binary, Decimal,Octal, Hexadecimal Co...  

C PROGRAMMING
   • C PROGRAMMING Full Course  

C TOPIC ON DEMAND
   • Difference Between void main() and in...  

C PROGRAMMING LIVE CLASS
   • C Programming tutorial for beginners ...  

C++
https://www.youtube.com/watch?v=Ubz8S...

Java
   • INTRODUCTION TO  JAVA  IN HINDI | Zee...  

JAVA PROGRAM
   • SET PATH IN JAVA IN HINDI|HOW TO RUN ...  

OOPS CONCEPT
   • Object Oriented Programming Paradigm ...  

HTML
   • INTRODUCTION  TO HTML IN HINDI |BASIC...  

DATA STRUCTURES AND ALGORITHMS
https://www.youtube.com/playlist?list..

COPUTER GRAPHICS
https://www.youtube.com/playlist?list...

OPERATING SYSTEM
https://www.youtube.com/watch?v=LyihW...

Computer Architechture
   • Binary, Decimal,Octal, Hexadecimal Co...  


COMPUTER NETWORK
   • COMPUTER NETWORK  

STUDENT SUPPORT
   • BCA Course Detail |what is BCA |full ...  


UGC NET Solutions of Computer Graphics
https://www.youtube.com/playlist?list...













zeenat hasan data structure
zeenat hasan computer graphics
zeenat hasan operating system
zeenat hasan youtube channel
zeenat hasan java programming
zeenat hasan html
computer graphics tutorial in hindi