What is Reviewing model changes in Laravel, and what role does it play in a real application?

What is Reviewing model changes in Laravel, and what role does it play in a real application? In Laravel, reviewing model changes should be understood as part of a larger application architecture rather than as an isolated API call. Whenever database columns change, mass-assignment configuration should be reviewed so the intended attributes remain explicit. A strong understanding includes its purpose, the layer where it belongs, the data or request flow it affects, and the situations where another mechanism may be more appropriate. Practical context: Mass assignment controls which attributes may be assigned through methods such as create and fill, helping prevent unintended fields from being populated from request data. The specific focus here is reviewing model changes: Whenever database columns change, mass-assignment configuration should be reviewed so the intended attributes remain explicit. This question is designed to test not only terminology, but also how the concept fits into Laravel's request, application, database, security, or deployment workflow.