simple problem about logic

StudentId(int,not null)
FullName(nvarchar(30),not null))
DOB(smalldatetime)

StudentCerificateId(int,not null,pk)
StudentId(int,not null,pk)
CertificateName(nvarchar(30))
CertificateDate(smalldatetime)

On submission of complete form for saving record(s) into database, a verification must make sure that at least a single record exists for Student Certificates, otherwise abort the save operation.