reengineering and case tools

7/29/2019 reengineering and case tools

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INTRODUCTION

What is it?

Who does it?

Why is it important?

What are the steps?

What is the work product?

How do I ensure that I have done it right?


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BUSINESS PROCESS ENGINEERING

Business Processes

Principles of Business Process Reengineering

A BPR Model

Words of Warning


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WHYDOESRE-ENGINEERINGFAIL?

Trying to fix a process instead of changing it

Ignoring everything except the process design

Quitting too early

Reengineering from the bottom upNeglecting peoples values and beliefs

Being willing to settle for minor results

Assigning someone who does not understand

reengineering to lead the effort


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FOURSTAGESOFCHANGE

Shock

Anger

Denial

Acceptance


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WHATISREVERSEENGINEERING?

RE encompasses any activity that is done to

determine how a product works, to learn the ideas

and technology that were used in developing that

product.

RE can be done at many levels

RE generally belongs to Software Maintenance


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NEEDOFREVERSEENGINEERING

Recovery of lost information

Assisting with maintenance

Migration to another hw/sw platform

Facilitating software reuse

Benefits

maintenance cost savings

quality improvements

competitive advantages

software reuse facilitation


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RESTRUCTURING

Transformation from one representation to another

at the same level.

Requirements

Design

Source code

Behavior


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MAJORTASK

Code Restructuring

Data Restructuring


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FORWARD ENGINEERING

Forward engineering means the generation of code

from UML diagrams


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FORWARD ENGINEERINGFORUSERINTERFACE

Understand the original interface and the data that

move between it and the remainder of the application.

Remodel the behavior implied by the existing interface

into a series of abstractions that have meaning in the

context of a GUI.

Introduce improvements that make the mode of

interaction more efficient.

Build and integrate the new GUI


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WHATISCASE?

Computer aided software engineering (CASE) is

the use of software tools to assist in the

development and maintenance of software.

They automate project management activities,

manage all work products produced throughout the

process, and assist engineers in their analysis,

design, coding and test work.


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BUILDINGBLOCKSOFCASE


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CASEENVIRONMENT


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CASEENVIRONMENT

Sharing of information among all tools

Version control and configuration management

Reflection of change

Direct access to all tools.

Automates support and support for communication

Consistent human/computer interface


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Center of accumulation or storageAchieves data/data and data/tool integration

PROPERTIES

Data integrityStandardization

Data independence

Transaction ControlSecurity

Ad-hoc queries and reports

Multi-user support

CASEREPOSITORY


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reengineering and case tools

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