This paper deals with the effective implementation of the new Czech morphological analyser ajka which is based on the algorithmic description of the Czech formal morphology. First, we present two most important word-forming processes in Czech — inflection and derivation. A brief description of the data structures used for storing morphological information as well as a discussion of the efficient storage of lexical items (stem bases of Czech words) is included too. Finally, we bring some interesting features of the designed and implemented system ajka together with current statistic data.