Enterprise Architecture: an approach for Information ...fp0804.emu.ee/pdf/PedroSousa.pdf · Lucent MML Commands ... Ericsson MML Commands Synchronization to CDD Search Area BSDS BSDS

Enterprise Architecture:an approach for Information Systems Architecture

Pedro SousaForsys, Riga, November 2009

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Pedro Sousa

Agenda

• Presentation

• Key issues in Information Systems Architecture

• The Enterprise Architecture approach

• A proven Methodology for Information Systems Architecture

• Examples

Forsys, Riga, November 2009 2

Pedro Sousa

Presentation – Research and Professional Activities

• Associate Professor at Lisbon Technical University – Courses of IS & Information Systems Architecture– Active research in the area

• Senior Consultant at Link consulting for Enterprise Architecture Projects in several industry sectors:– Private:

• Finance, Telecommunications , Pulp & Paper, Retail– Public:

• Health, Justice and Central Banking

Forsys, Riga, November 2009

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Agenda

• Presentation




• Examples


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Key issues in Information Systems Architecture


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RF-Cell Planning

RE&CW

NQ&PI

Real Estate

NP&D

NE&P

NO&M

NMC

P&R

Marketing

NetworkInplementation

A

GEOSACCompareCDD/CNA

A

BTS Process

A

Planet Parser

A

OMC-2000A

CircGest

A

Pathloss

A

CDD

A

RF-Tool

A

Planet

A

Phoenix

R Traffic

R ImplementationBTS Status

R BTS Executedchanges

R ImplementationBTS Status

R GEOSAC:Network Statistics

R CNA

R GEOSAC NetworkParameters

R MW

R BTS General Plan

R Planet

R RF-Tool

R Phoenix

R CDD

R Shared Towers

R Mobile BTS

R Ultimas

R Plot BTS

R BTS Folder

R Repeaters

R Antennas Stock

R TRX per BTS

R RF BTS Status

P&R

P&R

CDD to GEOSAC Compare

BTS Information

New Site Location

BTS Infrastructure StatusBTS Infrastructure Status

BTS Infrastructure Status

BTS InfrastructureStatus

Annual BTS General Plan




Geographical Informationand Address

Hardware Changes Request

BTS Process Workflow

Shared Towers

Mobile BTS

Ultimas

Plot BTS

BTS Folder

Repeaters

Antennas Stock

Update Stock

TRX per BTS

RF BTS Status

RF Neighborhood

RF Neighborhood



Planned BTS

Changes to Planned BTS

BTS Implemented Modifications

BTS Planned Modifications

BTS Planned Modifications

Phoenix

Topology information

CDD

SDCCH Traffic Data

Lucent MML Commands

Network parameters

Network parameters

Ericsson MML Commands

Synchronization to CDD

Search Area

BSDS

BSDS

BSDS

BSDS

Synchronization to GEOSAC

Drive Test RequestBTS Description

Synchronize

Planet


New Working BTS

Proposal Annual BTS Plan

Synchronization

RF-ToolProposal Annual BTS Plan

Maps With BTS Geographic Information MW Site Data

Geographical information

BTS Configuration

Preferential new site

Coverage Areas

Search Area

Proposal Annual BTS Plan

How good is a given Information System Architecture ?

• Does it support organization´s day to day activities?

• Does it provides timely and accurate information for business needs?

• Does it supports business changes ?

All the above in addition to support the evolution of problem models....


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Key issues in Information Systems ArchitectureHow well the IS fits into the organization ?• One must model organization structure and operations in order to align the

different IT artefacts• One must ensure traceability from those artefacts up to the IT

architectures artefacts.

Conhecimento da Organização

Information Systems InformationE

ntities

Business Rules

External Systems

People, Units,Goals

Infra-structure

Business Processes

Organization

External Entities

Security Rules


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Key issues of IS Architectures

A good Information System Architecture should allow:

• Adequate support for business activities

• Timely and accurate information

• Easy adjustment to organization and business changes

• Overall cost minimization

• All the above in addition to support the evolution of domain

problem models....

Why functional requirements are not enough ?

• Requirements Engineering captures the domain problem and users needs but fails do capture organization overall requirements and information's flows.

• In fact, how can we verify that a given set of requirements do support organization needs ?

• Business Processes and Information Entities are central concepts for modelling organization operations and to derive IT requirements and architecture!


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Agenda

• Presentation




• Examples


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Enterpriser Architecture


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OrganizationalArchitecture

Technologic Architecture

System (application)Architecture

Information Architecture

Process Architecture

Alignment and

Rastreability

• Vision/Mission/ Strategy • Units/Stakeholders• Regulamentations• Products

• Business Processes/Rules• Business Services• Roles• Functional Requirements

• Business Inf. Entities• Information Life Cicle• Overall ICT Information

Requirements

• Systems Architecture• System Requirements• Operational Requirements

• Technology to be used in each • System Requirements• Operational Requirements

Enterpriser Architecture


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OrganizationalArchitecture

Technologic Architecture

System (application)Architecture



Business

IT

Typical IT cycle in Organizations


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1) Processes vs Systems• System Development projects• Focus on Process Automation

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22) Systems vs Information

• Integration projects• Focus on Information flow

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3) Information vs Processes• Focus on information meaning

and business information requirements

The IS Architecture is a Process!


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IS Architecture

IMPLEMENTTHISWAY!

PLANTHIS WAY!

The IS Architecture is a Process!

In order to achieve normalized (pluggable) software products, several industries (telcos, retail, banking,..) realize that they first must

normalize business process and information architectures...


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IS Architecture

Agenda

• Presentation




• Examples


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The Methodology for Information Systems Architecture

How to work

Where we are

Where we want to be

How to get there

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The CRUD Matrix: a key instrument for Information Systems Architecture

Entidades Informacionais

Information Entities

Business Processes

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•CRUD stands for:•Create•Read•Update•Delete

•Each cell states the relation between the processes and the information

•IS appear as grouped cells, in such a manner so that processes and information are well supported.

Step 1 – Fill cells with CRUD relations


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Step 2 – Reorder Lines and Columns and cluster them into Systems


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Agenda

• Presentation




• Examples


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Step 1


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Step -2


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Documents

Enterprise Architecture: an approach for Information ...fp0804.emu.ee/pdf/PedroSousa.pdf · Lucent MML Commands ... Ericsson MML Commands Synchronization to CDD Search Area BSDS BSDS