GigaBASE is object-relational embedded database engine for C++ applications. It provides SQL-like query language, smart C++ interface, and transactions based on shadow paging.
Object-Relational
http://www.garret.ru/gigabase.html
https://sourceforge.net/projects/gigabase/
http://www.garret.ru/gigabase/GigaBASE.htm
Konstantin Knizhnik
RU
Open Source
C++
FastDB