alternate options for infinite loop

alternate options for infinite loop

we are running one third party application which uses C#,SQL SERVER.we
have created one other application which prints the pass.basically it does
continuous checking of new entry from third party application in one of
the table on remote database.if new entry present then print
pass.Accessing network database in such way is not good way and also
sometimes application hang.
Instead of continuous loop,i am searching for some other way like As the
new entry comes, it trigger my application for print or any other good way
to implement.
Thanks