An apparatus for synchronizing data between DBMSs has a first DBMS and a second DBMS. The second DBMS has a storage for persistently storing data items in a form of a storage structure, i.e. database. The second DBMS has also a second data storage for persistently storing data in a form of a sequential order, i.e. a transaction log. The data to be synchronized from the first DBMS to the second DBMS is analysed and based on the analyzing, it is decided how to persistently store the data between the first and the second data storage in the second DBMS. There can be decided how to store the data between the first and the second data storage. The characteristics of the data to be stored may influence on the storage between the first and the second data storage. Thus, the storage depends on the actual data to be stored.