What is the definition of business rule in database?
A business rule in the context of a database is a specific guideline or constraint that defines or constrains some aspect of the business. It is a statement that describes the operations, definitions, and constraints that apply to an organization’s data and processes. Business rules help ensure that the data is accurate, consistent, and aligned with the organization's objectives.
In a database, business rules can take various forms, including:
Data Integrity Constraints: Rules that ensure the accuracy and consistency of data, such as primary keys, foreign keys, unique constraints, and check constraints.
Validation Rules: Conditions that data must meet to be considered valid, such as ensuring that a customer's age is greater than 18 or that an email address follows a specific format.
Business Logic: Rules that dictate how data can be created, updated, or deleted, such as requiring managerial approval for certain transactions.
Access Control Rules: Guidelines that determine who can access or modify certain data based on roles or permissions.
Overall, business rules are essential for maintaining the integrity of the database and ensuring that it supports the organization's operational and strategic goals.