Journal of Information Technology Review Michal Kvet, Karol Matiaško 6 1 2015 Effective timed data processing belongs to one of the most important task of the development of current information and database systems. It is not, however, only the changes in time management, but also the complex record of changes during the whole life cycle of the object – historical values, actual states, but also data valid in the future. Existing temporal solutions are inadequate in terms of performance - effectiveness of the whole system, which is manifested by the size of the required data and processing time. There is no temporal solution for Select statement defined and user has to manage it explicitly. This paper deals with the principles of temporal data modelling on object and attribute level. It also describes the characteristics of Select statement used in temporal system, extends it with new characteristics and defines new layer for transformation into existing syntax.