User role using database

 Hi,
I have a problem regarding user role in aspx
I am using Database to define the user role instead using aspx  roles management control
here is my database called MemberLoginType

 
1 CREATE TABLE MemberTable
2 (MemberID INT, MemberType bit, MemberPass varchar(20))
3 GO
Here i create 3 columneg MemberID = 1 MemberType=true MemberPass=123  MemberID = 2 memberType=false MemberPass=abc True that is mean this member is an admin and if the person login it redirect to page1.aspx False that is mean this member is a ordinary member and if the person login it ...