DB-Library for C and Net-Library Interaction
When a call is made to open a connection to Microsoft® SQL Server™ 2000 (dbopen), DB-Library determines which client Net-Library should be loaded to communicate with SQL Server.
Net-Libraries are linked dynamically at run time. With the Microsoft Windows NT® 4.0, Microsoft Windows® 2000, Microsoft Windows 95, and Microsoft Windows 98 operating systems, Net-Libraries are implemented as dynamic-link libraries (DLLs), and multiple Net-Libraries can be loaded simultaneously. With the Microsoft MS-DOS® operating system, Net-Libraries are implemented as terminate-and-stay-resident (TSR), and only one can be loaded at any given time.