What is a three-tiered database architecture?

A three-tiered database architecture is a software design pattern that separates an application into three distinct layers: the presentation layer, the application layer, and the database layer. The presentation layer handles user interface and interaction, the application layer contains the business logic and processes user requests, and the database layer manages data storage and retrieval. This separation enhances scalability, maintainability, and flexibility, allowing for easier updates and modifications to each layer independently. It is commonly used in web applications and enterprise systems.