Imagine you are running a business. You need to save and retrieve files every day. You have two choices: The Remote Mega-Warehouse: A massive, high-security building located 10 miles away. Every time you want to save a single piece of paper, you have to call a courier, wait for them to drive there, pass through three security checkpoints, wait for a clerk to find an empty shelf, and then get a confirmation call back. The Desktop Filing Cabinet: A small, incredibly fast drawer right under your desk. You open it, drop the paper in, and close it. Total time: half a second. In the world of technology, Oracle, Microsoft SQL Server, MySQL, and PostgreSQL are the Mega-Warehouses. SQLite is the filing cabinet. The "Big Four" and the Hidden Tax When companies choose big names like Oracle or MySQL , they think they are buying "power." While these systems are very capable, they come with a "Hidden Tax" that most people don't notice until their app starts feeling slow. 1.…