Components and Interfaces Cont'd.

• Interfaces contain operations to specify class/component services and to bind them into physical implementations of systems;
• Components are built to realise the interfaces (export interfaces)
• Components are built to conform to interfaces in order to use component services through them (import interfaces);
• The same interface may act as export interface for one component and an import interface for another component;
• The same component may import many interfaces and export many others;
• Binding components must ensure that all the import interfaces areprovided by the exported interfaces.