Large-Scale, Component-Based Development

5.4. The Elements of a Component-Based Approach

Having discussed the key role played by interfaces, and the importance of models in describing a component's behavior, we can now turn our attention to the elements of a practical component-based approach to application development. The basic approach of CBD is the move toward applications assembled from components that have been developed as independent services communicating over a common infrastructure making use of common services. From this description we can identify four essential elements of CBD that must be defined:

• Application assembly from components;

• Provision of independent services;

• A common component infrastructure;

• Use of standard services.

The component development and application ...