A method comprising: providing an initial load of a data item from a source system to a target system, wherein the data item is associated with a trigger maintained at the source system; recording one or more changes in a logging table as one or more records of the logging table, when one or more changes to the data item at the source system cause the trigger to prompt the recording, each of the one or more records of the logging table representing one of the one or more recorded changes including a command and actual data being changed; extracting, from the logging table, all of the one or more records, each representing one of the one or more recorded changes, to enable at least a confirmation of a consistency of the one or more recorded changes, for each extracted record of the logging table, the extracting further comprising: placing the extracted record of the logging table into a buffer; reading a record of an application table at the source system into the buffer, the record of the application table including the data item at the source system; determining the consistency by comparing the extracted record of the logging table and the record of the application table; and removing the extracted record of the logging table and the record of the application table from the buffer if the extracted record of the logging table and the record of the application table are not consistent; and providing the one or more extracted records of the logging table in the buffer to a replication server configured to write the one or more changes represented by the one or more extracted records of the logging table in the buffer to the target system. providing an initial load of a data item from a source system to a target system, wherein the data item is associated with a trigger maintained at the source system; recording one or more changes in a logging table as one or more records of the logging table, when one or more changes to the data item at the source system cause the trigger to prompt the recording, each of the one or more records of the logging table representing one of the one or more recorded changes including a command and actual data being changed; extracting, from the logging table, all of the one or more records, each representing one of the one or more recorded changes, to enable at least a confirmation of a consistency of the one or more recorded changes, for each extracted record of the logging table, the extracting further comprising: placing the extracted record of the logging table into a buffer; reading a record of an application table at the source system into the buffer, the record of the application table including the data item at the source system; determining the consistency by comparing the extracted record of the logging table and the record of the application table; and removing the extracted record of the logging table and the record of the application table from the buffer if the extracted record of the logging table and the record of the application table are not consistent; and placing the extracted record of the logging table into a buffer; reading a record of an application table at the source system into the buffer, the record of the application table including the data item at the source system; determining the consistency by comparing the extracted record of the logging table and the record of the application table; and removing the extracted record of the logging table and the record of the application table from the buffer if the extracted record of the logging table and the record of the application table are not consistent; and providing the one or more extracted records of the logging table in the buffer to a replication server configured to write the one or more changes represented by the one or more extracted records of the logging table in the buffer to the target system.