Access to data of a data analysis system by external database systems

A computer program product comprising:

• one or more computer readable storage media, and program instructions collectively stored on the one or more computer readable storage media, the program instructions comprising:
• program instructions to provide a data analysis system comprising a source database system and a target database system, the data analysis system operable to synchronize data in the source database system with the target database system using a primary source transaction log in the source database system and a primary target transaction log in the target database system;
• program instructions to create a secondary transaction log;
• program instructions to receive, from the target database system, data changes applied at the target database system;
• program instructions to create, in the secondary transaction log, for each received data change, at least one log entry that represents the respective received data change;
• and
• program instructions to provide the secondary transaction log to a set of external database systems, for causing the data changes to be applied according to the secondary transaction log, thereby causing the data to be stored in the set of external database systems.

A computer system comprising:

• one or more computer processors, one or more computer readable storage media, and program instructions collectively stored on the one or more computer readable storage media for execution by at least one of the one or more computer processors, the program instructions comprising:
• program instructions to provide a data analysis system comprising a source database system and a target database system, the data analysis system operable to synchronize data in the source database system with the target database system using a primary source transaction log in the source database system and a primary target transaction log in the target database system;
• program instructions to create a secondary transaction log;
• program instructions to receive, from the target database system, data changes applied at the target database system;
• program instructions to create, in the secondary transaction log, for each received data change, at least one log entry that represents the respective received data change;
• and
• program instructions to provide the secondary transaction log to a set of external database systems, for causing the data changes to be applied according to the secondary transaction log, thereby causing the data to be stored in the set of external database systems.