In DataFlex, business rules that centrally define table relationships and manage database operations are contained in "Data Dictionaries," a core component of the application framework. They validate all database operations to ensure data quality and integrity. They also enforce UI consistency by defining datas default visual representation across all devices. Changes made to Data Dictionaries propagate throughout web, mobile and Windows apps. With DataFlex Data Dictionaries, building and maintaining applications is faster and easier and data quality is maintained.