Model Driven Architecture in
the Enterprise
Amit, Keyur, Sabhay and Saleh
Model Driven Architecture in the Enterprise
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Introduction to MDA
The Role of UML in MDA
Introduction to EDOC
Other Enterprise Modeling Approaches
Modeling Tools Supporting MDA
Project Current Status
Modification in Our Scope
• Objective Before:
– Evaluate EDOC, apply it to a test
• Objective Now, to answer the questions
– How far is UML and MDA related/consistent?
– What kind of support do modeling tools do for
MDA/EDOC?
– How far is the EDOC from today’s enterprise
modeling practices and tools market?
Introduction to MDA
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Abstraction: A Historical Lesson
MDA: Why?
MDA: How?
MOF: MDA’s Genie
MDA: Model-Driven Architecture
• Historic Lessons
Machine Language
– More Abstraction
= More Reuse
= More Productivity
= Less Maintenance Cost
Assembly Language
• Model Driven Architecture
3GL Languages
– Use Patterns at Multiple
Levels of Abstraction
Model Driven
Architecture
Model-Driven Architecture: Why
• Platform-independent Modeling
– Rapidly Changing Technology
– Applications Spanning Multiple Platforms
• Viewpoints-Based Modeling
– Different abstractions for the same system
– Different models for the same system
• Issues
– Consistency?
– Changeability?
Model-Driven Architecture: How
• Metamodels
– Modeling modeling languages
– Open-ended modeling capability
• Technology Mappings
– Transformation Rules
– From modeling language to technology
OMF: MDA’s Genie
• Modeling Language for Defining Virtually
Any Modeling Languages
• Intersects with UML Syntactically &
Semantically
• Tools interchange meta models via XMI
• Tools transform platform-independent
models
– Generate platform-specific models or
implementation
UML’s Role in MDA
• History of UML
– Early 1990s – Object Oriented Analysis and
Design (OOAD) had three groups
• Rumbaugh
• Booch
• Jacobson
– In 1996 – Creation of Universal Modeling
Language (UML) v. 1.1
UML’s Role in MDA (UML 1.x)
• Strengths:
– Separation of Abstract Syntax from Concrete
Syntax
• Meta-model
– Enables Extensibility
• UML Profiles
UML’s Role in MDA (cont.)
• Strengths:
– Support for Platform Independent models
• Defines relationships without details of
implementation
– Open System
• Custom plug-ins
UML’s Role in MDA (cont.)
• Weaknesses:
– Lack of support for component based modeling
• Unsatisfactory results
– Lack of communication
• No means of inter-tool communication
– UML and MOF not in synch
• Problems for developers
UML 2.0
• Many UML 1.x Weaknesses Resolved
– New set of structural and behavioral diagram
– Support for component-based modeling
• Composite Structures
– UML and MOF
• Inconsistencies have been corrected
– Improved Behavioral Modeling
• Action model
– Better Communication
• Interchange specification using XML
Enterprise Distributed Object Computing
• Based on the MDA concept
• Specific meta models for enterprise
modeling
• Benefits from ISO ODP-RM viewpoints
Other Enterprise Modeling Approaches
Other Approaches
TOGAF
Zachman
IDEF
C4ISR, TEAF
TOGAF Framework
The Zachman Framework
IDEF& TEAF
• IDEF (for Integrated Definition)
 Modeling methods used to describe Enterprise Operations.
 Creation of the United States Air Force, now being developed
by Knowledge Based Systems.
 Sixteen methods, from IDEF0 to IDEF14 (and including
IDEF1X), are each designed to capture a particular type of
information through modeling processes .
• The Treasury Enterprise Architecture
Framework (TEAF)
Developed by the Department of the Treasury in
response to a number of government directives.
C4ISR
• Command, Control, Communications, Computers, Intelligence,
Surveillance, and Reconnaissance was started in 1995 by the Assistant
Secretary of Defense for Command, Control, Communications, and
Intelligence (ASD, C31) formed the C4I Integration Support Activity
(CISA) to develop a unified approach for development and evaluation
of information and architectures
Various Views of C4ISR
Modeling Tools Supporting MDA
What is considered an MDA supported tool?
– Is the model on the highest level of abstraction ?
– Are the transformation definitions maintainable by you?
– Do transformations generate a majority of the
application?
– Do transformations support incremental and iterative
modeling and development?
Tools supporting MDA
Component-X by Data Advanced Technology
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Seems to be the official EDOC tool.
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A triple standards alignment with ebXML, EDOC and EAI to
become component model for XML web services.
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EDOC has been implemented in Component-X.
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Component-X and the EDOC Component Collaboration
Architecture are part of the UML family of languages.
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Supports integrating applications across platforms, technologies,
Internet and the enterprise.
Tools supporting MDA
OpenMDX: An Advanced MDA Framework
 Advanced implementation of the MDA initiative.
 Industrial-strength, model-driven runtime engine, open, and
framework for PIMs.
 OpenMDX provides a generic, distributed object engine which serves
as a PIM platform.
Rhapsody by I-Logix
 One of the market leading UML 2.0 Model-Driven Development
 Focuses on the needs of the embedded developer and fully supports
the concepts of MDA
Tools supporting MDA
The TAU Generation2 Approach to MDA
– Based on UML 2.0 to substantially improve software productivity and
quality.
– Automate the transformation of a PIM requirements into a PSM
ExecutableUML (xUML)
– Creation of PIM with the UML diagrams.
– Multiple Executable UML models can be assembled together to form
complex systems
Timeline
1.Conception and Background (9/19 – 10/21)
• MDA, MOF, UML, EDOC, Tools, other Architectures.
2.Criteria for MDA-Tools Evaluation: (-11/4)
• Develop and finalize guidelines for tool evaluation
3.Evaluation of Tools and Techniques (-11/27)
• Try selected MDA-tools
• Try EDOC and related methods
4.Delivery: Final Report (–12/4)
• Final reports with conclusions and future outlook
Task Distribution
• So far:
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Introduction to MDA, MOF, EDOC by Saleh
Role of UML in MDA by Amit
Survey of Tools supporting MDA by Keyur
Enterprise modeling methodologies by Sabhay
• Future Tasks:
– Develop MDA-Tool Evaluation guidelines
– Analysis of one tool by each team member
– (Tentative) Compare EDOC and other
Enterprise Modeling Methodologies
Questions?
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