Description: Numeric check is a constraint used in databases that ensures that an entered numeric value meets certain predefined conditions. This technique is fundamental for maintaining data integrity, as it allows for the validation that values conform to specific criteria, such as ranges, data types, or formats. For example, it can be established that an age field only accepts values between 0 and 120, or that a price field cannot be negative. Numeric checks not only help prevent errors in data entry but also optimize query performance by ensuring that data is consistent and valid. Furthermore, this constraint can be implemented at the database level, meaning it applies regardless of the application using the database, thus providing an additional layer of security and reliability in data management. In summary, numeric checks are a crucial tool in database design that contribute to the quality and accuracy of stored information.
