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Rules that enforce basic and fundamental information-based constraints typically include data integrity rules, such as primary key constraints that ensure uniqueness of records, foreign key constraints that maintain referential integrity between tables, and check constraints that validate data against specific conditions. These rules help maintain the accuracy and consistency of data within a database. Additionally, validation rules can enforce data types and formats, ensuring that only appropriate data is entered into the system. Together, these constraints form the foundation for reliable data management and retrieval.

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