Systems Analysis & Design
Sixth Edition
Toolkit Part 2
Toolkit Objectives
● Explain CASE tools and the concept of a
CASE environment
● Trace the history of CASE tools and their
role in a fourth-generation environment
● Define CASE terms and concepts,
including a repository, modeling tools,
documentation tools, engineering tools,
and construction tools
2
Toolkit Objectives
● Explain an integrated development
environment
● Provide examples of CASE tools
features
● Describe future trends for CASE tools,
including new developments and the
emerging role of object-oriented
analysis and design
3
Introduction
● Computer-aided systems engineering
(CASE), also called computer-aided
software engineering, is a technique
that uses powerful software, called
CASE tools
● You will learn about integrated software
development environments
4
Overview of CASE Tools
● CASE tools can reduce costs, speed up
development, and provide
comprehensive documentation that can
be used for future maintenance or
enhancements
● CASE Environment
● CASE Tools History
–
–
As early as the 1960s
Forty years ago – procedural languages
5
Overview of CASE Tools
● CASE Tools History
– Modern languages – non-procedural or eventdriven
– Object-oriented programming languages
(OOPL)
– Fourth-generation languages (4GLs)
– Fourth-generation environment
6
Overview of CASE Tools
● The Marketplace for CASE Tools
– Includes a wide variety of vendors and products,
and no one tool dominates the market
– The first step in learning about CASE tools is to
understand basic CASE terms and concepts
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CASE Terms and Concepts
● A typical CASE tool is actually a set of
individual tools that share a repository of
information
● Repository
– When you define a data element in the
repository, you can assign a data type and
format, a range of acceptable values, and one or
more aliases
– Alias
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CASE Terms and Concepts
● Individual Tools
– Modeling tools
– Documentation tools
– Engineering tools
• Forward engineering
• Reverse engineering
9
CASE Terms and Concepts
● Individual Tools
– Construction tools
•
•
•
•
Application generator – code generator
Screen generator
Report generator – report writer
Mock-up report
10
Integrated Development
Environments
● Integrated development environment
(IDE)
● Examples of Integrated Development
Environments
– Oracle Designer
– Microsoft’s Visual Studio .NET
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Integrated Development
Environments
● Pros and Cons of Integrated
Development Tools
– Is highly effective because it is an integral part of
the vendor’s software package
– The only possible disadvantage is that each IDE
is different, and requires a learning curve and
skills that might or might not be readily
transferable
– CASE tools can be used in any development
environment
12
CASE Tool Examples
● You can choose from dozens of vendors
and CASE tools that offer a wide range of
functions
● Three leading CASE tool suppliers:
Visible Systems Corporation, Popkin
Software, and Rational Software
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CASE Tool Examples
● Visible Analyst
– Visible Systems Corporation is an important
player in the software development market
– Can generate many types of models and
diagrams
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CASE Tool Examples
● System Architect
– Popkin states that its product is the first fully
integrated modeling tool to unify the enterprise
with complete business and systems information
management
– Offers numerous diagrams and definitions
– Also offers extensive tutorials
15
CASE Tool Examples
● Rational Software
– IBM’s Rational Software offers a wide range of
systems development and modeling products
– Rational Software Architect
– Rational Edge
16
Future Trends
● Will consist of cross-platform tools that
are capable of working with data and
business processes both within the
enterprise and from outside customers
and suppliers
● Will undoubtedly be planned,
constructed, and maintained with a new
generation of CASE tools
17
Future Trends
● New Features
– Framework Manager
– Lines between traditional CASE tools and other
modeling tools continue to blur
– Microsoft Visio
– Another trend is represented by Microsoft’s
Visual Studio .NET
18
Future Trends
● The Emerging Role of Object-Oriented
Analysis and Design
– Structured analysis
– Systems development life cycle (SDLC)
– Object-oriented analysis and design (OOAD) is
gaining popularity
– Features of an O-O approach include modular
design and reusable code that easily can be
combined and reassembled into new
components
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Toolkit Summary
● CASE tools are software programs that
system developers use to help them
design and construct information
systems
● A repository is a database that serves as
a central storage location for all
information about the system being
developed
● An integrated set of CASE tools can be
used to model, document, engineer, and
construct the information system
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Toolkit Summary
● Forward engineering means translating
business processes and functions into
applications
● Two trends seem clear: CASE tool
vendors will continue to include
powerful new features, and the
popularity of object-oriented tools will
continue to grow
● Toolkit Part 2 complete
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