"Bridging mode--bridge" in design mode

Bridging mode is the separation of things from their specific implementations so that they can change independently of each other. Bridging is intended to: the abstraction and implementation of decoupling, so that they can change independently , like our common JDBC Bridge DriverManager, JDBC to connect to the database, the database switch between the various databases, basically do not need to move too much code, Even without the slightest movement, the reason is that JDBC provides a unified interface, each database provides its own implementation, with a program called database-driven to bridge the line;

"Bridging mode--bridge" in design mode