When to use data extensions

Data extensions are extensions to existing entities.

Data extensions are useful when you want to add additional fields to an existing InfoSphere® MDM entity and the existing services for a business object are sufficient to process the additional attributes that are being added. That is, no new business logic, unique business key configurations, validations or rules of visibility, for example, are needed to meet the requirement of processing the business object.

For information about how to create data extensions, see Extensions.