PostgreSQL: Documentation: 17: 5.5. Constraints
5.5. Constraints # 5.5.1. Check Constraints 5.5.2. Not-Null Constraints 5.5.3. Unique Constraints 5.5.4. Primary Keys 5.5.5. Foreign Keys 5.5.6. Exclusion Constraints …| PostgreSQL Documentation
5.5. Constraints # 5.5.1. Check Constraints 5.5.2. Not-Null Constraints 5.5.3. Unique Constraints 5.5.4. Primary Keys 5.5.5. Foreign Keys 5.5.6. Exclusion Constraints …| PostgreSQL Documentation
