The database access library for C++ programmers that provides the illusion of embedding SQL in regular C++ code, staying entirely within the C++ standard.
The SOCI - The C++ Database Access Libraryproject is a PostgreSQL Community project that is a part of the pgFoundry.
The pgFoundry page for the project is at http://pgfoundry.org/projects/soci, where you can find downloads, documentation, bug reports, mailing lists, and a whole lot more.