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Best Practices in Business Rule Design and Implementation

Rules are the heart of business logic. Businesses implement their information systems upon the pillars of business rules. The application architecture of a business information system (whether e-business, client-server or “legacy”) handles the flow of information from layer to layer: the user-interface accepts information and filters it in a preliminary way by applying validation rules. The data is then passed through to the application layer (a.k.a. business logic layer), potentially through some middleware.