Object relational databases. Using object-oriented constructors in data modeling. Advanced features of data modelling. Object-oriented databases. ODMG standard. Multidimensional view on data and multidimensional modelling. Conceptual models. Organization of data at internal level. Use B-trees, bitmap indexes and their combinations as physical structures to solve star queries in a warehouse environment. Transactional processing in distributed databases. Advanced features of Oracle database. Data protection.