Database Consistency

Database consistency refers to maintaining the accuracy and reliability of data within a database, ensuring that it adheres to all defined rules and constraints. Think of it like a set of strict guidelines that data must follow, such as not allowing negative numbers for age or ensuring that a purchase order matches existing customer details. When a transaction occurs, the database checks these rules to ensure data remains valid and trustworthy. If any changes violate these rules, the transaction is rolled back to keep the data consistent. This process ensures that the database accurately reflects real-world information without errors.