Which embedded database capable of 100 million records has an efficient C or C++ API

Question

I\'m looking for a cross-platform database engine that can handle databases up hundreds of millions of records without severe degradation in query performance. It needs to h

Answer 1

As you are familiar with Fairtree, then you are probably also familiar with Raima RDM.

It went open source a few years ago, then dbstar claimed that they had somehow acquired the copyright. This seems debatable though. From reading the original Raima license, this does not seem possible. Of course it is possible to stay with the original code release. It is rather rare, but I have a copy archived away.