Extended Stored Procedures Programmer's Reference
Applies To: SQL Server 2016 Preview
The Microsoft Extended Stored Procedure API, previously part of Open Data Services, provides a server-based application programming interface (API) for extending Microsoft SQL Server functionality. The API consists of C and C++ functions and macros used to build applications.
With the emergence of newer and more powerful technologies such as CLR integration, the need for extended stored procedures has largely been replaced.