Computer Science, asked by himavardhankumar, 5 hours ago

Which of the following are ture about a primary key

Answers

Answered by vinesh9717
1

Answer:

STUDENTS OF 9TH ATTENTION

CHAPTER OF BEEHIVE BOOK

VIRTUAL.CLASS START

JOI. IN FOR STUDY

Me. et. ing I. D: 618 501 8804

Pas. sco. de: kbv21june

Answered by spbankingandsscserie
0

Answer:

Primary keys must contain unique values. A primary key column cannot have NULL values. A table can have only one primary key, which may consist of single or multiple fields. When multiple fields are used as a primary key, they are called a composite key.

Similar questions