CREATE oracle OurDido.StudentStatement FROM OurDido.StudentAccount TO MyDido.Student ( StudentStatementId : Hash, StudentId : SELECT genesis FROM MyDido.Student STUDENT WHERE STUDENT.StudentId = $1., AccountId : SELECT genesis FROM MyDido.StudentAccount ACCOUNT WHERE ACCOUNT.AccountId = $2. ) AS UNION OF ( SELECT CURRENT FROM MyDido.Student WHERE MyDido.Student = STUDENT.StudentId, SELECT CURRENT FROM OurDido.StudentAccount WHERE OurDido.StudentAccount = ACCOUNT.AccountId );