Search notes:

%UniversalCRTSdkDir%\Include\%UCRTVersion%\um

This directory contains include files such as
esent.h used for Extensible Storage Engine
sql.h used for ODBC
WinBase.h
windows.h
winnt.h 32- and 64-bit Windows types and constants that are defined by NT, but exposed through the Win32 API.
WinUser.hh
A special directory, winsqlite contains winsqlite3.h which might be used to access SQLite with the UCRT?

Index