Three simple examples winform and ASPX straightforward description of the three-tier architecture built with reference to the relationship

WindowsFormsApplication1
........................\BLL
........................\...\bin
........................\...\...\Debug
........................\...\...\.....\BLL.dll
........................\...\...\.....\BLL.pdb
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\Model.dll
........................\...\...\.....\Model.pdb
........................\...\BLL.csproj
........................\...\obj
........................\...\...\Debug
........................\...\...\.....\BLL.csproj.FileListAbsolute.txt
........................\...\...\.....\BLL.dll
........................\...\...\.....\BLL.pdb
........................\...\...\.....\Refactor
........................\...\...\.....\........\BLL.dll
........................\...\...\.....\ResolveAssemblyReference.cache
........................\...\...\.....\TempPE
........................\...\Properties
........................\...\..........\AssemblyInfo.cs
........................\...\UserBLL.cs
........................\DAL
........................\...\bin
........................\...\...\Debug
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\Model.dll
........................\...\...\.....\Model.pdb
........................\...\DAL.csproj
........................\...\obj
........................\...\...\Debug
........................\...\...\.....\DAL.csproj.FileListAbsolute.txt
........................\...\...\.....\DAL.dll
........................\...\...\.....\DAL.pdb
........................\...\...\.....\Refactor
........................\...\...\.....\........\DAL.dll
........................\...\...\.....\ResolveAssemblyReference.cache
........................\...\...\.....\TempPE
........................\...\Properties
........................\...\..........\AssemblyInfo.cs
........................\...\UserDAL.cs
........................\Model
........................\.....\bin
........................\.....\...\Debug
........................\.....\...\.....\Model.dll
........................\.....\...\.....\Model.pdb
........................\.....\Model.csproj
........................\.....\obj
........................\.....\...\Debug
........................\.....\...\.....\Model.csproj.FileListAbsolute.txt
........................\.....\...\.....\Model.dll
........................\.....\...\.....\Model.pdb
........................\.....\...\.....\Refactor
........................\.....\...\.....\........\Model.dll
........................\.....\...\.....\TempPE
........................\.....\Properties
........................\.....\..........\AssemblyInfo.cs
........................\.....\Userinfo.cs
........................\WebApplication1
........................\...............\App_Data
........................\...............\bin
........................\...............\...\BLL.dll
........................\...............\...\BLL.pdb
........................\...............\...\DAL.dll
........................\...............\...\DAL.pdb
........................\...............\...\Model.dll
........................\...............\...\Model.pdb
........................\...............\...\WebApplication1.dll
........................\...............\...\WebApplication1.pdb
........................\...............\Default.aspx
........................\...............\Default.aspx.cs
........................\...............\Default.aspx.designer.cs
........................\...............\obj
........................\...............\...\Debug
........................\...............\...\.....\ResolveAssemblyReference.cache
........................\...............\...\.....\TempPE
........................\...............\...\.....\WebApplication1.csproj.FileListAbsolute.txt
........................\...............\...\.....\WebApplication1.dll
........................\...............\...\.....\WebApplication1.pdb
........................\...............\Properties
........................\...

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