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Begin

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The MDAReference Model

The ORMSCLaurence Tratt Tony ClarkWim Bast

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Agenda Introduction to the MDA Reference Model

An Simple MDA Example

The MDA Reference model itself

The example as instance of the MDA Reference Model

Conclusion

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Introduction to the MDA Reference Model

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What is the the MDA Reference Model A definition of the very basic concepts in

MDA and their relations

A class model

– defined using only common modeling constructs that are shared by UML and MOF

All MDA examples are instances of the MDA reference model

– where the MDA examples can include all meta levels, all modeling languages and all technologies

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What is it good for ? Captures existing MDA knowledge

Provides a basis for common understanding

Is a reference model to compare different MDA flavors / approaches

Exposes errors in what is being defined about MDA

Exposes deficiencies in what is being defined about MDA

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Plans for usages in the future The current version is a draft draft in

progress

It will be a fundamental part of a new version of the MDA Reference Guide

The AB will hopefully use it as a part of a new version of the OMA

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Requirements and Design rules

Vendor and MDA flavor neutral UML oriented, profiling, mark-ups, MOF oriented, family of

languages, Executable UML, …

Not a classification scheme of the different levels of abstraction, nor the different purposes of modeling languages

Precise yet not more formal then understandable

Layered: based on a kernel that is extended to more complex concepts

Rigid appreciation of the semantics of the used class model constructs of MOF and UML

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Who are creating it? The ORMSC is mandated by the AB to

develop a draft MDA Reference Model

Within the ORMSC a colorful palate of different MDA vendors are active

We develop one MDA Reference Model that does not exclude any MDA flavor

We are having a lot of fun !

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A Simple MDA Example

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CWMUML UML to Relational

Breakfast Tables

Breakfast Classes

BreakfastO to R

MOFMOF 2.0

Q/V/T

well-formed

according

well-formedaccording

well-formedaccording

well-formedaccording

well-formedaccording

well-formedaccording

well-formedaccording well-

formedaccording

The Example

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CWMUML UML to Relational

Breakfast Tables

Breakfast Classes

BreakfastO to R

MOFMOF 2.0

Q/V/T

mapsmaps

relatesto

translates translates

The Example

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BreakfastUML Class Model

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CWMUML UML to Relational

Breakfast Tables

Breakfast Classes

BreakfastO to R

MOFMOF 2.0

Q/V/T

mapsmaps

relatesto

translates translates

The Example

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Breakfast Rdbms Schema

id address price

order_id id amount

id name price

comestible_id

breakfast_order

part

comestible

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The MDA Reference Model itself

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Defined Concepts Structure (typed graphs)

Model

Model Types

Model Relations

Transformation

Transformation Types

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Defined Relation Types Classification / Instantiation

Usage Relations

Composition

Specialization

Transformation

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Overview

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Graphs

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Graphs

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Overview

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Models

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Models

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Overview

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Transformations

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Transformations

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Overview

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Typed Graphs

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Typed Graphs

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Overview

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Typed Model

s

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Typed Model

s

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Overview

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Typed Transformati

ons

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Typed Transformati

ons

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The simple MDA Example as Instance of the MDA Reference Model

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CWMUML UML to Relational

Breakfast Tables

Breakfast Classes

BreakfastO to R

MOFMOF 2.0

Q/V/T

The Example

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CWM:ModelType

UML :ModelType

Breakfast :ModelType

Breakfast :ModelType

MOF:ModelType

MOF Q/V/T:ModelType

The Example

UML to Relational

BreakfastO to R

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CWM:ModelType

UML :ModelType

UML to R. :Transformation-

Type

Breakfast :ModelType

Breakfast :ModelType

Breakfast:Transformation

MOF:ModelType

MOF Q/V/T:ModelType

The Example

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CWM:ModelType

UML :ModelType

UML to R. :Transformation-

Type

Breakfast :ModelType

Breakfast :ModelType

Breakfast:Transformation

MOF:ModelType

MOF Q/V/T:ModelType

:Transformation-Tracking

:Transformation-Tracking

:Model-Relation

:Transformation-Port

:Transformation-Port

The Example type

type

typetype

type

typetypetype

type type

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BreakfastUMLClass Model

: NodeType

: NodeType

: NodeType

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BreakfastUMLClass Model

: NodeType

: EdgeType

: NodeType

: EdgeType

: NodeType

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Breakfast Rdbms Schema

id address price

order_id id amount

id name price

comestible_id

breakfast_order: NodeType

part : NodeType

comestible : NodeType

: EdgeType

: EdgeType

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An Instance Model

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Conclusion

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TheMDA Reference Model Works !

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End