A.使用Microsoft SQL Serve索引來優(yōu)化數(shù)據(jù)運算 B.在一個業(yè)務(wù)層類中實現(xiàn)運算 C.在一個數(shù)據(jù)層類中實現(xiàn)運算 D.使用Microsoft SQL Server存儲過程來進(jìn)行數(shù)據(jù)運算
A.existingStudents.Merge(exStudents) B.exStudents.Merge(existingStudents) C.exStudents.Merge(existingStudents,True) D.existingStudents.Merge(exStudents,F(xiàn)alse) E.existingStudents.Merge(exStudents,True)
A.Students,SubjectTaken,Subjects B.SubjectTaken,Subjects,Students C.Students,Subjects,SubjectTaken D.Subjects,SubjectTaken,Students