After learning the three-tier architecture, I wrote an ASP.NET three-tier architecture guestbook, and the database SQL2000 is. It’s a very simple message board. Friends who are learning about three-tier architecture can check it out. I haven’t written too many functions. It’s mainly about practicing how to implement three-tier architecture. Since I’m new to three-tier architecture, I don’t know if my understanding is correct or not. If you find something wrong, you are welcome. Please correct me.
Management account: admin Admin password: admin Program description: Developed by Visual Studio 2008(.NET2.0)+SQLSERVER2000. BLL: business layer Utility: data access layer DAL: interface layer Model: data entity layer Web: presentation layer, web project. App_Data: All databases
