2. What are the conditions for a field to be a primary key?
Answers
Answered by
0
Answer:
Explanation:
A primary key is a field in a table which uniquely identifies each row/record in a database table. 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.
Please Please Please Add me in braintest & Follow me
Similar questions