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CompuwareCorporation 1
Begin
CompuwareCorporation
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
