Benkt Wangler SISU PO Box 1250 16428 Kista Sweden The ER model has proved a successful conceptual capture and modelling tool for the relational data model. Much effort has recently been made to extend the relational data model to describe historical information, but as yet little corresponding development in ER modelling has been made. We describe in detail… (More)
This paper describes the Tempora approach to capturing the functions and policies of a business as business rules, and the way in which those rules may be used to build a working information system. It discusses the nature of such rules, and presents some techniques for rule elicitation.