JDBC Drivers

A JDBC driver is the piece of code that turns Java method calls like connection.prepareStatement(...) into the wire bytes a specific database understands. The previous lesson covered the JDBC architecture at the level of "your code calls an API and a driver talks to the database." This lesson goes one layer down: what kinds of drivers exist, how the JVM finds them, what a JDBC URL actually says, and how DriverManager picks the right driver for a given URL.