Advanced Modelling Made Simple

(1)

Advanced Modelling

Made Simple

with the

Gmodel

metalanguage

(2)

Software

is an arbitrary set of

(3)

Software Artefact Production

software systems

& other humans

software

developers

(4)

http://commons.wikimedia.org/wiki/

File:Discussion.jpg

Software

suffers from the

same problems as way back

when

natural language

evolved to enrich the

exchange between humans

Increasingly the

artefacts

exchanged between

humans are neither hardware nor natural

language (encoded in speech or symbolic

notation)

All language artefacts share the probems of

natural language: unanticipated interpretations,

etc.

Today

http://commons.wikimedia.org/wiki/

File:Cloud_computing_icon.svg

(5)

Modelling is about Clarity

All models are code

a system of symbols used for

• identification

• classification in the sense of grouping

a system of signals used to send

messages

a set of

conventions governing behaviour

Modelling is meta coding

to improve clarity of code

(6)

Modularisation

Modules preserve

Simplicity

• Roles and modular artefacts represent

the building blocks of

value chains

• Optimise within the

organisational context

of customers,

suppliers, and available skills

separation of

concerns

unit of work

role based

A

B

C

D

E

F

Selection criteria for a metadata repository

Adequate support for CR compatible versioning, branching, locking requirements

Support for interfaces with current commercial products (eg ERWin) Metamodelling capability and ideally an extensible metametamodel Support for development of adapters Adequate support for generalisation/ specialisation

Support for multiple terminologies/ jargons

Integration with open source template/transformation languages RDBMS datastore binding (to support referential integrity)

Support for information ownership Adequate support for role based access control

(7)

A

F

EF

C

D

B

Value

Chain

produce

consume

produce

pro

du

ce

consume

pro

du

ce

pro

du

ce

co

nsu

me

pro

du

ce

co

nsu

me

consu

me

A

B

C

D

E

F

(8)

Semantic Modelling

Semantic

Domains

Models

1. Identification

of concepts

3. Naming of

concepts

2. Modelling

(9)

A

F

EF

C

D

B

Semantic Domains

(10)

A

B

C

D

E

F

Connected

(11)

Shared Language

ab

ac

df

de

ad

(12)

ab

ac

df

de

ad

bc

ef

cf

(13)

df

D

View Point

Perspective

Jargon

F

(14)

F

f

View Point

Reflexive Jargon

DSML

(15)

Jargons develop on top of

Shared Semantic Subdomains

A

B

C

D

E

F

ab ac

df

de

ad

bc

ef

cf

(16)

An

instance

is a set that

seems to contain one

and only one element at

any given point in time

from the view point of a

specific actor

Instantiation

is a

function that returns an

instance

_{ABC 123}

instance

model

of

instantiation

A

(17)

Programming

• Only one instantiation level

• Every technology uses

idiocyncratic mechanisms

for

• Instantiation

• Reuse

• Scope management

• Access control

• Modularisation

(18)

Modelling

• No limit to instantiation

levels

• A

single mechanism

for

• Instantiation

• Reuse

• Scope management

• Access control

• Modularisation

(19)

A

Vertex :

AnimalSpecies

maxAge

isAbstract : no

AnimalSpecies :

Dog

maxAge : 20

isAbstract : no

isPoliceDog

AnimalSpecies :

Cat

maxAge : 30

isAbstract : no

**[*]**

[2]

**[*]**

[2]

Dog :

Jack

dateOfBirth : 1/5/03

isPoliceDog : yes

AnimalSpecies :

Mammal

maxAge : 150

isAbstract : yes

dateOfBirth

Dog :

Susie

dateOfBirth : 1/2/00

isPoliceDog : no

Cat :

Coco

dateOfBirth : 4/3/07

Cat :

Peter

dateOfBirth : 10/9/98

treatment time

species

configuration

time

system

design time

multi-level modelling

precise instantiation

semantics

role based

binding times

modularity

simplicity

instantiation ...

establishes

connections between

two levels of abstraction

that

define different binding times

generalisation/specialisation ...

expresses the

commonalities and

variabilities

between the concepts

relevant to a specific binding time

a

consistent instantiation

mechanism at all levels

and

unlimited levels of

(20)

Metalanguage Emulation

Integrator

produce

pro

du

ce

grey

= meta artefacts

red

= instantiation semantics

black

= artefact structure

blue links

= superset references (reuse)

(21)

Modelling Language Design

Language

Designer

(22)

Modelling

pro

duce

(23)

CRM System Usage

Sales Exec

(24)

(25)

Thank you

Jorn Bettin

Software is Models

The Role of Artefacts

tiny.cc/artefacts

From Muddling to Modelling

tiny.cc/muddleToModel

Model Oriented Domain Analysis

tiny.cc/domainanalysis

Multi-Level Modelling

tiny.cc/gmodel

Denotational Semantics

tiny.cc/densem

More Information

jbe @ sofismo.ch

www.sofismo.ch