what is the difference between primary key and foreign key?

Question Posted / preethi

3 Answers
5865 Views
TCS, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

what is the difference between primary key and foreign key?..

Answer / shiva

the primary key is used identified the unique value
presented in the table but foriegn key is used to refer the
value of the table that have unique vale,multiple foriegn
key present in multiple tables

Is This Answer Correct ?

6 Yes

0 No

what is the difference between primary key and foreign key?..

Answer / preethi

a table must have single unique primary key but mutiple
foriegn key to refer different tables.

Is This Answer Correct ?

7 Yes

3 No

what is the difference between primary key and foreign key?..

Answer / aaa

combination of columns is called primary key and columns in
one table whose primary key matches with other table is
foreign key

Is This Answer Correct ?

0 Yes

5 No

Post New Answer

More Engineering AllOther Interview Questions

differance between impedance relay,mho relay, reactance relay in detail

8 Answers Ecil, GATE,

what happens if an error occurs in constructor or destructor.

1 Answers Microsoft,

I HAVE GOT 55% IN 12TH CLASS. IS IT GOOD TO DO B.E. CAN I SIT IN THE CAMPUS SELECTION.

3 Answers Infosys,

i am satish i want to preapare for group-1 exams so please help me?

0 Answers

discuss the technique for implementing high performance computing

0 Answers

how to find out the name of the users who are currently working starting with the same characters in unix os

0 Answers

What is a superheterodyne receiver?

2 Answers

What are the input documents to 1.Functional testing,2.System testing and 3.Integration testing. Whether there will be separate test cases for regression testing or functional testing?

0 Answers

HI!I AM A STUDENT OF B.TECH 3RD YEAR.I PASSED SECONDARY EXAM IN 2001 & HIGHER SECONDARY EXAM 2003.BUT I DROP 1 YEAR AND ADMITTED IN B.TECH 2004 DUE TO FINANCIAL CRISIS.WHEN INTERVIEWER LOOK AT MY C.V HE WANT 2 KNOW WHAT U DID IN THAT MISSED YEAR? I GET PUZZLED 2 ANSWER THIS QUESTION AS I CAN NOT FIND ANY BOLDER ANSWER.PLZ SUGGEST ME SOME BOLD ANS. THAT INTERVIEWER CAN NOT FIND ANY COUNTER QUARY.... 0 2

4 Answers TCS, Tech Mahindra,

Explain the difference between RAM and ROM? What is “Volatile Memory

0 Answers

Bird is flying 120 km/hr between B to R. Two trains at B to R at 60 kmph. The distance traveled by the bird before it is killed?

3 Answers IBM, L&T,

CSS corp interview process and placement papers

0 Answers CSS Corp,

For more Engineering AllOther Interview Questions Click Here