Composite Primary Key

How can i implement :
Foreign key of one table referencing composite primary key of other table?
ewhopcisAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

namasi_navaretnamCommented:
Try this

Alter table table2
add CONSTRAINT fkey FOREIGN KEY (id1, id2 ) REFERENCES dbo.table1


id1, id2 columns exists in both Table1, Table2
0
ewhopcisAuthor Commented:
can i define the composite foreign key while creating the table?
0
namasi_navaretnamCommented:
Yes.

drop table a1
go
create table a1
(
col1 int,
col2 int,
PRIMARY KEY (Col1, Col2)
)

go

create table a2
(
 myid int not null,
 col1 int not null,
 col2 int not null,
 FOREIGN KEY (col1, col2) REFERENCES a1 (col1, col2)

)

go
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.