Task: Create Shared Model

This task creates a model to hold both interfaces elements (interfaces, operations, data types) and internal semantic elements shared by multiple subsystems.

Purpose

The purpose of the shared model is to provide a location for interface and semantic elements that are used by multiple subsystems.

Relationships

Roles	Primary: Architect	Additional:	Assisting:
Inputs	Mandatory: System Architecture Model	Optional: None	External: None
Outputs	Shared Model

Main Description

The shared model is used by multiple subsystems to hold information used by them. It typically organized into three primary areas - overall architectural descriptions, interface elements, and internal but common elements.

Steps

Determine shared model organization

Create shared model

Create shared model organization

Establish shared model baseline

Key Considerations

Elements that fall completely within one subsystem should be represented solely withyin that subsystem.