What Is PDB File

1. It is a file which will be added in the bin folder.
2. PDB means "program database" in which all debug symbols are present.
   
3. A program database (PDB) file holds debugging and project state information that allows incremental linking of a debug configuration of your program.
4. A PDB file is created when you build with /debug (Visual Basic/C#). You can build Visual Basic and Visual C# applications with /debug:full or /debug:pdbonly.