This paper deals with the analysis and data shaping of the motor vehicle registration information system in the Republic of Croatia. Throughout the work, many of the essential stages required to develop such a system have been used. In order to start from something, it was necessary to create the organizational structure of the system and determine the business functions and processes of the system. The next step is a process of analysing SSA and DTP diagrams. After analyzing the process, data modeling is started and data flows and repositories are created. Data modeling identifies entity types, entities themselves and their attributes. After all the data have been collected, the ER model begins to be build, the ER model serves to show the scheme of the system described in the paper. The resulting ER model is transformed into a relational model that tells us about primary and external keys and relational inter-entity connection. After conversion to a relational model, the data is normalized, which checks whether the system obeys the rules of normal forms. In order to show the simplicity of the system and how well it works, it is given complicated algorithms, and it shows through the resulting relational data model how easily it handles them.