Components of Specifications
Specifications of an information system include-
- Structure - How it is organized
- Function - What it does
- Behaviour - How it responds to events and stimuli
- Data - Its meaning and organization.
Most CASE tools co-ordinate information systems projects through a project or system dictionary. The function of the dictionary is to standardize the use of terms throughout the organization and to serve as a repository of all common information in the project. It enforces consistency as well as (relative) completeness of the specifications and facilitates verification and validation of such specifications. It also serves as a means of communication between different persons on the information system building team. The figure below shows the various components of the specifications and the modeling techniques utilized.