Question

A primary key is which of the following?
A.Any attribute
B.An attribute that uniquely identifies each row
C.An attribute that uniquely identifies each column
D.A derived attribute

Answer 1

Any attribute is the right answer.

Answer 2

Question A primary key is which of the following?

A.Any attribute

B.An attribute that uniquely identifies each row

C.An attribute that uniquely identifies each column

D.A derived attribute

The question is that we have to find the correct option to a given question, the question is about the primary key.

The exact definition of the private key is the primary key is a minimal set of attributes which uniquely identifies any row of a table.

A table consists of n number of rows and columns.

for example the student details, the attributes were the name, street, id and department.

Among these attributes, the id will be unique.

so the id attribute which was unique forms a primary key.

for that id, the entire attributes define the details.

Based on the above observation, the correct answer to the given question is B.

Option B is An attribute that uniquely identifies each row.

# spj6

we can find similar questions through the link given below

below

https://brainly.in/question/6888821?referrer=searchResults