Rational Unified Process

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Rational Unified Process

• Jed Kao-Tung Chang

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What is the Rational Unified Process?

• A software engineering process
• Process framework

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Outline

• Static Structure Process Description
• Dynamic Structure Iterative Development
• An Architecture-Centric Process
• A Use-Case-Driven Process
• Deployment Workflow
• Iteration Plans
• Implementing the Rational Unified Process

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Static Structure

• The Rational Unified Process model is built on
  three entities roles, activities, and artifacts.
• Workflows relate activities, artifacts, and roles
  in sequences that produce valuable results.

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Example of the Workflow
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Dynamic Structure Iterative Development

• The sequential, or waterfall, process is fine for
  small projects.
• An iterative process breaks a development cycle
  into a succession of iterations.
• A development cycle is divided into a sequence of
  four phases that partition the sequence of
  iterations. The phases are inception,
  elaboration, construction, and transition.

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From sequential to an iterative cycle
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Activities across one development cycle
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Benefits of an iteration approach

• The iterative approach accommodates changes in
  requirements and in implementation strategy. It
  confronts and mitigates risks as early as
  possible. It allows the development organization
  to grow, to learn, and to improve. It focuses on
  real, tangible objectives.

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Architecture View

• System architecture is used in the Rational
  Unified Process as a primary artifact for
  conceptualizing, constructing, managing, and
  evolving the system under development.
• Architecture is a complex concept that is best
  represented by multiple, coordinated
  architectural views.
• An architectural view is an abstraction of a
  model that focuses on its structure and its
  essential elements.

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Use-Case-Driven Process

• Use cases drive numerous activities in the
  Rational Unified Process
• Creation and validation of the design model
• Definition of the test cases and test
• procedures in the test model
• Planning of iterations
• Creation of user manuals
• Deployment of the system

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The Deployment Workflow

• The purpose
• Timing of Deployment
• The Deployment discipline takes care of all
  artifacts delivered to the end users as well as
  supporting organizations.

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Workflow
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Typical Iteration Plans

• An iteration in the inception phase to define the
  project vision and the business case
• An iteration early in the elaboration phase to
  build an architectural prototype
• An iteration late in the construction phase to
  implement the system

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Defining the Product Vision and the Business
Case
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Building an Architectural Prototype
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Implementing the system
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Implementing the Rational Unified Process

• Step 1 Assess the Current State
• Step 2 Set (or Revise) Goals
• Step 3 Identify Risks
• Step 4 Plan the Process Implementation
• Step 5 Execute the Process Implementation
• Step 6 Evaluate the Process Implementation

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Implementing the Rational Unified Process
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Summary

• Rational Unified Process, or RUP, is a
  configurable software development process
  platform that delivers practices and a
  configurable architecture.
• Enables the developer to select and deploy only
  the process components they need for each stage
  of their project.

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Reference

• Boehm, Barry W. 1996. "Anchoring the Software
  Process." IEEE Software, July, pp. 7382.
• Boehm, Barry W. 1998. "A Spiral Model of Software
  Development and Enhancement." IEEE Computer, May,
  pp. 6172.
• Jacobson, Ivar, Grady Booch, and James Rumbaugh.
  1999. The Unified Software Development Process.
  Reading, MA Addison-Wesley.
• Philippe Kruchten, 2003. The Rational Unified
  Process, An Introduction. Addison Wesley.
• Craig Larman, 2003. Applying UML and Patterns
  An Introduction to Object-Oriented Analysis and
  Design and Iterative Development (3rd Edition)
• Booch, Grady. 1994. Object-Oriented Analysis and
  Design with Applications, Second Edition.
  Reading, MA Addison-Wesley.
• www-306.ibm.com/software/awdtools/rup/

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Questions?