Enterprise Implementation phase 2

Stage 2 begins the "Functional Integration" where several applications are built using the enterprise-application database pair.

Now, the Finance system also uses much of the data already in the HR system and it is scheduled for rewrite the following year. You go through the same process as described for the HR System. This time, you already have an enterprise database, so when you get the Finance System attributes you look at dbEnterprise to see if you need to add any new entities or attributes to support finance. You then design the application database dbFinance using the functionally dependent data from the business problem. You implement the second system.

Now there are two, completely independent applications, Human Resources and Finance. However, they are integrated through their common enterprise database. The enterprise data that describes an employee appears only once. An update to any employee occurs only once but it is seen by both systems.