The major tool employed in data planning and data administration is the application data model. Application data models can be produced on at least three levels. Outline these THREE (3) levels and briefly discuss their purpose.


 

  • Corporate data models: Specifying data requirements for a whole organization;



  • Business area data models: Specifying data requirements for a particular business area;



  • Application data models: Specifying data requirements for a particular information systems application.