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

There used to be a product called b-trieve but I'm not sure if source code was included. I think it has been discontinued. The only database engine I know of with an ISAM orientation is c-tree.