The topic of this master thesis is to compare and analyze five database of companies in terms of suitability for the process of valuation . The main reason why these databases (Albertina, Amadeus , Magnus , Market Line and Capital IQ) are used is their accessibility within the field of study Finance and Business Valuation in University of Economics in Prague. The thesis is structured with respect to the valuation process recommended by professor Mařík (2011) . The first part contains data collection and focuses primarily on general data options for each database. The second part is a detailed financial analysis describing and comparing the ratios followed by databases options in the field of strategic analysis. The possibility of calculation of NOPAT and operationally necessary capital employed is presented after strategic analysis. The last two chapters deal with the database containing capital markets data and can provide the basics for calculation of interests rate and the actual valuation based on market analysis. The conclusion summarizes the main advantages of databases as appropriate for valuation.