Business requirement, Functionality requirements and Non-functionality requirements: Their differences, relationship and interdependence

Error and failure are what's left when we think everything else has been accounted for. Analyzing a business, an analyst needs to fully understand that there is a fine line between these three business concepts, their differences, relationship and interdependence, they need to be understood else confusing them together can lead to business failure in the short, medium and long run. Business Requirements: A business requirement is not just something a system must do. It is something that the business needs to do or have in order to stay in business, take for example a business needs to increase sales, else, it'll run out of business, this a business requirement. It has to be done if not the business may not function properly or wind up for good . A business requirement is often less dynamic; it doesn't change often. Functionality Requirements: A functional requirement describes how we perform our business processes (or their functionality), how a business intends to achieve ...