Data contents, attribute, constrains, and even data structure should be
changed to meet business needs. These changes in the life cycle of data
contents should be managed to verify the soundness of the data. To
support data oriented business tasks, which involves complex and
frequent change of contents, a systematic management of the change is
mandatory. Previous works focus on managing changes of document in
the tasks, so it is hard to trace history of the change of contents to
justify the correctness of the current data. This paper propose a system
to manage business processes based on hierarchically linked granular
tasks and keeping history of the data items according to the tasks. With
this system, we could not only trace change of the data, but also
confirm business tasks which affected the change. Additionally, users
could estimate required time, related personnel, and restrictions for a
change by searching the proposed integrated system.