STLdb4 下载：sourceforge.net/project/showfiles.php?group_id=16036&package_id=81863

STLdb4 发布公告：freshmeat.net/projects/libstldb4

现代 C++ 设计: erdani.org/book/main.html

Berkeley DB 主页：www.oracle.com/technology/products/berkeley-db/db/index.html

Db::get API: www.oracle.com/technology/documentation/berkeley-db/db/api_cxx/db_get.html

Berkeley DB 并发数据存储应用程序：www.oracle.com/technology/documentation/berkeley-db/db/ref/cam/intro.html

资源获取即初始化：en.wikipedia.org/wiki/Resource_acquisition_is_initialization

Boost 主页：boost.org/libs/libraries.htm