MIDAS is national research data archive. The aim of the MIDAS is to collect, process, store and analyse scientific research data and other relevant information in all fields of knowledge, enabling free, easy and convenient access to it via the Internet. MIDAS provides services for registered and not-registered users: students, listeners, academics, researchers, scientific workers, research data evaluation and quality assurance experts, other participants in a science and studies system as well as individuals interested in research data. MIDAS consists of 2 parts: MIDAS portal (all users) and user account (internal portal for registered users).The Vilnius University is controller and main processor of MIDAS system.