SystemClass Single SystemClass ClassCode System.String true false 50 SelectAllNode System.Int32 false false 4 Select select * from SystemClass where ClassCode=@ClassCode Text @ClassCode ClassCode VarChar SelectAll select * from SystemClass Text Insert Insert into SystemClass ( ClassCode, SelectAllNode ) values ( @ClassCode, @SelectAllNode ) Text @ClassCode ClassCode VarChar @SelectAllNode SelectAllNode Int Update Update SystemClass set SelectAllNode=@SelectAllNode where ClassCode=@ClassCode Text @ClassCode ClassCode VarChar @SelectAllNode SelectAllNode Int Delete Delete from SystemClass where ClassCode=@ClassCode Text @ClassCode ClassCode VarChar