Which component helps manage database transactions in a Mule application?

The Database Connector is instrumental in managing database transactions in a Mule application. It establishes a connection between the application and the database, enabling operations such as creating, reading, updating, and deleting records.

When a transaction is initiated through the Database Connector, it allows for actions to be grouped together in a single unit of work. This means that the processes can be committed or rolled back as a whole, ensuring data integrity and consistency. Transaction management is crucial, especially in scenarios where multiple operations must succeed or fail together, and the Database Connector provides the functionality to handle such cases effectively.

The other options do not perform this role. An API Gateway primarily acts as a control point for API requests, an HTTP Listener is designed to handle incoming HTTP requests, and a Message Router is used for directing messages through different flows. None of these components inherently provide the transactional capabilities required for robust database management.