Database layer:Create databases and stored procedures.
Data access layer:Create the namespace huantu. Dal. Generate the component File huantu. Dal. dll.
Business logic layer:Create the namespace huantu. BLL. Generate the component File huantu. BLL. dll.
Web interface layer (front-end ):Create the namespace huantu. UI. Web. Generate the component File huantu. Web. dll.
Management System Web interface layer (background ):Create the namespace huantu. UI. Web. admin. Generate the component File huantu. UI. Web. admin. dll.
Windows interface layer (front-end ):Create the namespace huantu. UI. Windows. Generate the component File huantu. UI. Windows. dll.
Management System Windows interface layer (background ):Create the namespace huantu. UI. Windows. admin. Generate the component File huantu. UI. Windows. admin. dll.
Object objects transmitted between layers:Create the namespace huantu. object. Generate the component File huantu. Object. dll.