QDBM is an embeded database library compatible with GDBM and NDBM. It features hash database and B+ tree database and is developed referring to GDBM for the purpose of the following three points: higher processing speed, smaller size of a database file, and simpler API. This package includes APIs for C, C++, and Java. CGI scripts are also contained. APIs for Perl and Ruby should be installed with a source package.