Question - What do you understand by Connectors? Can you describe the Connector Architecture?
Answer -
Connectors are used for providing standard extension mechanisms to provide connectivity to different enterprise information systems. A connector architecture consists of resource adapters and system-level contracts, both of which are specific to enterprise information systems. The resource adapters are plugged into the container. The connector architecture defines certain contracts which a resource adapter must support for plugging into J2EE applications like security, transaction, resource management etc.