Access Modifiers in OOP control the visibility of class members. There are four types: public, protected, private, and internal.

1. Public Access Modifier:

2. Private Access Modifier:

3. Protected Access Modifier:

4. Internal Access Modifier:

Client-side Example: ReactJS
In React, you can control component accessibility using JavaScript's export keyword.

Server-side Example: Node.js + Express:
In Express, access control can be managed in route handlers.

Database Example: MongoDB
MongoDB allows you to define field access within documents.

Best Practices

• Use the least restrictive access modifier needed.
• Encapsulate internal details to avoid unintended access.
• Consider security when exposing sensitive data.
• Maintain consistent access control across layers of your application.