A.数据结构、关系操作集合和关系的完整性
B.一级模式、二级模式、三级模式
C.数据库、数据表、索引
D.数据库、数据表、视图

A.ADOrs.Open "Select * From SC"
B.ADOrs.Execute "Select * From SC"
C.ADOrs.Create "Select * From SC"
D.ADOrs."Select * From SC"

A.Dim ADOcn As New Connection
B.Dim ADOcn As Connection
C.Declare ADOcn As New Connection
D.Declare ADOcn As Connection

A.Connection
B.Update
C.Command
D.Recordset

A.ADOcn.Execute "UPATE FROM SC WHERE 学号 = ’A30’ "
B.ADOcn.Execute "SELECT FROM SC WHERE 学号 = ’A30’ "
C.ADOcn.Execute "DELETE FROM SC WHERE 学号 = ’A30’ "
D.ADOcn.Execute "DROP FROM SC WHERE 学号 = ’A30’ "

A.ADOcn.Cretae cnStr
B.ADOcn.Open cnStr
C.ADOcn.connetion cnStr
D.ADOcn.conn cnStr