what is primary key?
Answers
Answered by
2
Answer:
in the relational model of database a primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a relation. in formerly a primary key is" which attributes identify a record" and in simple cases are simply a single attribute :unique ID
Answered by
1
Answer:
here is your answer bro please follow me
Attachments:

Similar questions