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01 Frontend (the part users see) What it is: The interface that users can see, click, and interact with. Where it is: Interfaces for websites, mini-programs, and apps. Tools: HTML (structure), CSS (styling), JavaScript (interaction). 02 Backend (the processing part behind the scenes) What it is: The brain behind the scenes, responsible for logic and calculation. Where it is: On the server, invisible to users. Function: Handles login and registration Calculates prices and recommends products Receives frontend requests and returns data Common languages: Java, Python, Go, JavaScript (Node.js) 03 Database (the memory part) What it is: Used to store and manage data. What it stores: Accounts, passwords, orders, inventory... Common databases: MySQL, PostgreSQL (relational, like tables) MongoDB (document-based, like folders) 04 SaaS (Software as a Service) What it is: SaaS = Software as a Service. Core features: Usable via web, mini-program, or app Monthly or annual subscription Common forms: Websites, mobile apps, and mini-programs can all be SaaS. 05 Summary Frontend: User-visible interface Backend: Logic and calculation behind the scenes Database: Storage and management of data SaaS: Delivering software as a service over the network Frontend display â Backend processing â Database storage â SaaS delivery method Help me draw an easy-to-understand diagram based on the content above.
