About Logical Architectures

A logical architecture identifies the software components needed to implement a solution, showing the interrelationships among the components. The logical architecture and the quality of service requirements determined during the technical requirements phase form a deployment scenario. The deployment scenario is the basis for designing the deployment architecture, which occurs in the next phase, deployment design.

Designing a Logical Architecture

When you design a logical architecture, use the use cases identified during the technical requirements phase to determine the Java Enterprise System (Java ES) components that provide the services necessary for the solution. You must also identify any components providing services to the components you initially identify.

You place the Java ES components within the context of a multi-tiered architecture according to the type of services that they provide. Understanding the components as part of a multi-tiered architecture helps you later determine how to distribute the services provided by the components and also helps determine a strategy for implementing quality of service (such as scalability, availability, and others.)

For more detailed information about logical architectures and the solution life cycle, see the Sun Java Enterprise System Deployment Planning Guide in the following documentation collection: http://docs.sun.com/coll/1286.2.