A system is a set of application programs, or applications, grouped by business function. Applications are grouped into systems because each cluster of applications typically serves a different user community within the enterprise.
In terms of ATM, an application is a major business function. Each application is implemented by a set of transactions (see “Application Form” on page 145).
Ensuring that applications are clustered into the appropriate systems is the most important activity undertaken during this stage of the ATM process. The information described by the System form is generic and applies irrespective of the eventual physical implementation of the database.
The System form has two purposes:
This form supports the third step in the ATM process (see “Goals” on page 123).