1. A recording medium storing a data structure for managing reproduction of titles having different data formats by a reproducing apparatus comprising: a data area including at least a movie title and a Java title; and a data management area including a plurality of data management files for managing reproduction of at least the movie title and the Java title by a reproducing apparatus, wherein the data management files include a first object file containing first management information for managing reproduction of the movie title by the reproducing apparatus, and a second object file including second management information for managing reproduction of the Java title by the reproducing apparatus.