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Model Driven Architecture in the Enterprise. Amit, Keyur, Sabhay and Saleh. Model Driven Architecture in the Enterprise. Introduction to MDA The Role of UML in MDA Introduction to EDOC Other Enterprise Modeling Approaches Modeling Tools Supporting MDA Project Current Status.

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Model Driven Architecture in the Enterprise

Amit, Keyur, Sabhay and Saleh


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Model Driven Architecture in the Enterprise

  • Introduction to MDA

  • The Role of UML in MDA

  • Introduction to EDOC

  • Other Enterprise Modeling Approaches

  • Modeling Tools Supporting MDA

  • Project Current Status


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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?


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Introduction to MDA

  • Abstraction: A Historical Lesson

  • MDA: Why?

  • MDA: How?

  • MOF: MDA’s Genie


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MDA: Model-Driven Architecture

  • Historic Lessons

    • More Abstraction

    • More Reuse

    • More Productivity

    • Less Maintenance Cost

  • Model Driven Architecture

    • Use Patterns at Multiple Levels of Abstraction

Machine Language

Assembly Language

3GL Languages

Model Driven Architecture


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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?


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Model-Driven Architecture: How

  • Metamodels

    • Modeling modeling languages

    • Open-ended modeling capability

  • Technology Mappings

    • Transformation Rules

    • From modeling language to technology


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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


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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


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UML’s Role in MDA (UML 1.x)

  • Strengths:

    • Separation of Abstract Syntax from Concrete Syntax

      • Meta-model

    • Enables Extensibility

      • UML Profiles


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UML’s Role in MDA (cont.)

  • Strengths:

    • Support for Platform Independent models

      • Defines relationships without details of implementation

    • Open System

      • Custom plug-ins


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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


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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


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Enterprise Distributed Object Computing

  • Based on the MDA concept

  • Specific meta models for enterprise modeling

  • Benefits from ISO ODP-RM viewpoints


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Other Approaches

TOGAF

Zachman

IDEF

C4ISR, TEAF

Other Enterprise Modeling Approaches




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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.


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    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


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    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?


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    Tools supporting MDA

    Component-X by Data Advanced Technology

    • Seems to be the official EDOC tool.

    • A triple standards alignment with ebXML, EDOC and EAI to become component model for XML web services.

    • EDOC has been implemented in Component-X.

    • Component-X and the EDOC Component Collaboration Architecture are part of the UML family of languages.

    • Supports integrating applications across platforms, technologies, Internet and the enterprise.


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    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


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    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


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    Timeline

    • Conception and Background (9/19 – 10/21)

      • MDA, MOF, UML, EDOC, Tools, other Architectures.

    • Criteria for MDA-Tools Evaluation: (-11/4)

      • Develop and finalize guidelines for tool evaluation

    • Evaluation of Tools and Techniques (-11/27)

      • Try selected MDA-tools

      • Try EDOC and related methods

    • Delivery: Final Report (–12/4)

      • Final reports with conclusions and future outlook


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    Task Distribution

    • So far:

      • 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



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