Category — Data Modelling

Some Data Entities in a business can exist in many states.  For example, a theatre Booking could possibly exist in the states of “provisional”, “cancelled”, “confirmed”, or “picked up”.  If such were the case it might be essential to know what Business Functions move the Booking from one state to the next. [Read more →]

Before computerising any part of a business it is essential to identify and model the data used or created by the Business Functions being computerised and its relationship to other data items (data entities) within the business.

This is where the Data Structure Model – often referred to simply as a Data Model or an Entity Relationship Diagram or ERD – is an indispensable tool. [Read more →]