Extended Stored Procedure API
The Extended Stored Procedure application programming interface (API) is a server-based API specific to Microsoft® SQL Server™ 2000. It can be used to produce extended stored procedures. An extended stored procedure is a C or C++ dynamic-link library (DLL) that can be called from Transact-SQL using the same syntax as calling a Transact-SQL stored procedure. Extended stored procedures are a way to extend the capabilities of Transact-SQL to include any resources or services available to Microsoft Win32® applications.