The DB-Library functions for the Win32 API are stored in a dynamic-link library, NTWDBLIB.DLL. Net-Libraries for Windows NT and Windows 95 are also implemented as DLLs. For example, DBNMPNTW.DLL connects to SQL Server over named pipes. Set the PATH environment variable to include the directory in which the libraries reside.
The NTWDBLIB.LIB file is an import library containing function definitions that your applications use.