Advance in computer networks leads to the information communication using computers. Some information on computer users is necessary for the information communication. The increasing number of computers and users makes the acquisition of information on the computer users very difficult. To cope with this situation, CCITT Study Group VII recently proposed the draft recommendations on directory systems.
In this thesis, we designed a prototype directory system to be used in research and development networks with a proper set of operations and attribute types according to the CCITT recommendation on the X.ds series, and implemented this directory system in SDN. This directory system also supports the Korean language.
