Data of the big-scale research project on integration and disintegration processes in Hungarian society led by Imre Kovách are now available in the RDC. Goal of the research has been to sociologically analyse those processes that largely influence how social inequalities are reproduced. The researchers have produced a model of integration in their database and compared it the most commonly used other models to measure social inequality. During data collection, 2678 people were interviewed, 345 filled out a network diary and 345 took part in a survey experiment.