About
The goal of Change Data Capture is to track change in the source data. When running integration interface, ODI-EE can reduce the volume of source data processed in the flow by extracting only the changed data.
Reducing the volume of source data is useful in many field such as:
Synchronization/Replication
These changes are captured by Oracle Data Integrator and transformed into events that are propagated throughout the information system.
Changes tracked by Changed Data Capture constitute data events. The ability to track these events and process them regularly in batches or in real time is key to the success of an event-driven integration architecture.
Changed Data Capture is performed by journalizing models. Journalizing a model consists of setting up the infrastructure to capture the changes (inserts, updates and deletes) made to the records of this model's datastores.
Oracle Data Integrator supports two journalizing modes:
Simple Journalizing tracks changes in individual datastores in a model.
Consistent Set Journalizing tracks changes to a group of the model's datastores, taking into account the referential integrity between these datastores. The group of datastores journalized in this mode is called a Consistent Set.
Hope this Helps! Rupam
