Business rules portray the business approaches applicable to the information placed on the databases of an organization. Business rules, as they were, reflect how a business views its use of information. Some business rules are particularly critical to the database architect since they can join into the intelligent mapping of the database. There are certain imperatives that fashioners apply to guarantee that a database respects an organization’s business rules. These limitations help safeguard information uprightness. Business-rules limitations fall into two categories: field requirements inside tables, and Relationship imperatives between tables.