—This paper analyzes the problem of heterogeneous
databases exist changes in data capture and data
synchronization in enterprise data integration, a variety of
ways to change data capture for comparison, A method
combining triggers with log tables for change data capture is
put forward based on the researches above, and an
incremental synchronization mechanism based on web service
is designed for distributed heterogeneous databases. The
establishment of a central database, it takes use of the eventdriven
data transportation mechanism to synchronize the
incremental data captured by each distributed databases and
the center database. This paper then implemented a prototype
system of incremental data synchronization for distributed
heterogeneous database and finally tested it using an example
to verify the feasibility and rationality of the design