How SQLite Internals Connect Into One Unified System

Hello, I'm Maneshwar. I'm building git-lrc, an AI code reviewer that runs on every commit. It is free, unlimited, and source-available on Github. Star Us to help devs discover the project. Do give it a try and share your feedback for improving the product. In the previous section, we explored individual pieces of SQLite’s internal architecture—the sqlite3 structure, schema objects, tables, indexes, and execution engine. Now, it’s time to zoom out and see how all of these components actually interact in a real system. This is where things start to feel less like isolated structures and more like a living system. The Big Picture: Application ↔ SQLite At the highest level, an application interacts with SQLite through two primary handles: sqlite3* → Represents a database connection sqlite3_stmt* → Represents a compiled SQL statement Every API call, whether it’s preparing a query, executing it, or fetching results—flows through these two interfaces. SQLite doesn’t just passively execute que