[boost] [relational] Relational Model Library

Hi all, I have recently completed a library for implementing relational models in C++. Using template metaprogramming, multi-index containers can be manipulated using SQL-style queries, while retaining type-safety and efficiency. The web page is http://visula.org/relational This might be an appropriate interface for the database library that was recently discussed. This is not the same as Relational Template Library, which uses an entirely different interface. Is there any interest in providing relational containers in Boost? Are there any features/improvements you can suggest for RML? Many thanks, Calum