What common mistake do developers make with Database refresh, why does the mistake cause problems, and what is the safer approach?

What common mistake do developers make with Database refresh, why does the mistake cause problems, and what is the safer approach? One recurring problem with database refresh is applying it without understanding the boundary it protects. Relying only on Laravel validation for uniqueness and never protecting the data with an appropriate database constraint. In addition, Framework-supported database reset traits can recreate a predictable database state between tests. Safer engineering approach: keep the responsibility in the correct layer, use the framework's supported API, validate and authorize inputs, avoid hidden side effects, and verify the behavior with tests.