libpqxx: Libpqxx (C++ client API for PostgreSQL) libpqxx: libpqxx: C++ client API for PostgreSQL. The standard front-end (in the sense libpqxx: of "language binding") for writing C++ programs that use PostgreSQL. libpqxx: libpqxx: libpqxx: libpqxx: libpqxx: libpqxx: libpqxx: