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SYAD-week2CASETools.pptx
Toolkit B – The Systems Analyst’s Toolkit CASE Tools
Kent Institute Australia Pty. Ltd.
ABN 49 003 577 302 CRICOS Code: 00161E RTO Code: 90458 TEQSA Provider Number: PRV12051
Version 2 – 18th December 2015
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Prescribed Text and recommended readings
Rosenblatt, H. J. (2016), Systems Analysis and Design.11th Edition, Cengage Learning, Boston MA
Robertson, S. and Robertson, J. (2013), Mastering the Requirements Process: Getting Requirements Right, 3rd Edition, Addison Wesley, Upper Saddle River, NJ
IIBA (2015), Guide to the Business Analysis Body of Knowledge, BABOK Version 3.0, International Institute of Business Analysis, http://www.iiba.org/BABOKGuide.aspx
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Learning 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
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Learning Objectives
Explain an integrated development environment (IDE) and application life cycle management (ALM) solutions
Provide examples of CASE tool features
Describe CASE tool trends, and how they relate to object-oriented analysis and agile methods
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Overview of CASE Tools
Every type of work requires specific tools to do the job properly
Carpenters use hammers, drills, or screwdrivers
Chefs use measuring cups, knives, or spatulas
System development is no different
CASE tools reduce costs, speed up development, and provide comprehensive documentation for future maintenance or enhancements
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Overview of CASE Tools
CASE Tools History
Traditional code was written in procedural programming languages such as COBOL
Modern languages are non-procedural or event driven programming languages
Make it easier to implement an object-oriented design
Fourth-generation language environment includes modern CASE tools
System developers can deliver high quality software, shorten the timetable, and reduce expense
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Overview of CASE Tools
The Marketplace for CASE Tools
There is a wide variety of vendors and products
No one tool dominates the market
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FIGURE B-2 Visual Paradigm offers a free UML diagramming tool.
Source: Visual Paradigm
Overview of CASE Tools
Selection of a CASE tool depends on:
The type of project
The size and scope of the project
Possible budgetary and time constraints
Preferences and experience of the system development team
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CASE Terms and Concepts
Repository
Database that serves as a central storage location for all information about the system being developed
Once a data element has been defined in the repository, it can be accessed and used by processes and other information systems
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CASE Terms and Concepts
FIGURE B-3 A Visible Analyst repository search for the data element named CUSTOMER NUMBER. The results will show all instances of the data element.
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CASE Terms and Concepts
Individual Tools
Used to model, document, engineer, and construct the information system
Modeling tools
Unified Modeling Language diagrams and functional decomposition diagrams (Chapter 4)
Data flow diagrams (Chapter 5)
Object diagrams (Chapter 6)
Entity-relationship diagrams (Chapter 9)
Structure charts (Chapter 10)
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CASE Terms and Concepts
Documentation tools
Used to check for inconsistent or incomplete information in forms, reports, and diagrams
Engineering tools
Forward engineering: Translating business processes into applications
Reverse engineering: Helps break down an existing application into diagrams, structure charts, and source code
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CASE Terms and Concepts
Construction tools
Application generator (code generator): Used to develop computer programs rapidly by translating a logical model directly into code
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FIGURE B-4 IBM Rational Rhapsody can generate source code from UML diagrams.
Source: IBM Corporation
CASE Terms and Concepts
Screen generator (form painter): Helps design a custom interface, create screen forms, and handle data entry format and procedures
Report generator (report writer): tool for designing formatted reports rapidly
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FIGURE B-5 SAP Crystal Reports is a popular report generator that can display business analytics and support decision making.
Source: SAP SE
Development Environments
Mix of software tools, methods, and physical resources used to create an information system
Integrated Development Environment (IDE)
Uses built-in tools provided by the software vendor that make it easier to create applications based on their products
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FIGURE B-8 Xcode is free IDE for all of
Apple’s platforms.
Source: Apple Inc.
Development Environments
Application Life Cycle Management Environment
Start-to-finish approach to planning, designing, developing, deploying, managing, and maintaining an information system
Part of product life cycle management (PLM)
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FIGURE B-9 HP provides a full range of application lifecycle management software solutions.
Source: Hewlett Packard Enterprise Development LP.
Development Environments
FIGURE B-10 PLM encompasses numerous disciplines, and is broader than ALM.
Source: Florida Institute of Technology.
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Development Environments
Pros and Cons of Integrated Development Tools
An integrated development tool is highly effective in a specific software environment as it is built into the vendor’s software package
Non-specific CASE tools such as Visible Analyst or Rational System Architect can be used in any development environment
Disadvantage - Each IDE is different
Requires a learning curve and skills that might or might not be readily transferable
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CASE Tool Trends
New Products and Features
CASE tool vendors constantly offer more features and greater flexibility
Framework: Organizes and documents system development tasks
Helps transform business processes into an information system
Example - Zachman Framework
Microsoft Visio - Models networks, business processes, and diagrams
Cloud-based development environments
Example - Heroku platform
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CASE Tool Trends
FIGURE B-11 The Zachman Framework in Visible Analyst provides an easy-to-follow matrix that helps system developers work on specific areas, and then integrate the results into an overall model.
Source: Visible Systems Corporation.
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CASE Tool Trends
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FIGURE B-12 Microsoft Visio can create many different types of diagrams.
Source: Microsoft Corporation.
CASE Tool Trends
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FIGURE B-13 The Heroku platform in the cloud.
Source: Salesforce.com
CASE Tool Trends
Method-Specific CASE Tools
Each development approach has a set of tools that works especially well for that method
Structured development relies heavily on DFDs and structure charts
Object-oriented methods use diagrams, such as use case, class, sequence, and transition state diagrams
Agile methods use spiral or other iterative models
Structured analysis - Traditional approach that is time tested and easy to understand
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CASE Tool Trends
Object oriented analysis and design (OOAD)
O-O CASE and UML-based modeling tools provide seamless development from planning to actual coding
Include modular design and reusable code
Agile methods
Agile developers use a wide range of modeling tools including CASE tools
CASE tools will continue to evolve and become more powerful
System developers may choose simpler, low-tech methods and techniques as modeling tools
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Toolkit Summary
CASE stands for computer-aided systems engineering
CASE tools help design and construct information systems
Modern languages are non-procedural
Components of a fourth-generation environment
Repository is a database that serves as a central storage location for all information on the system being developed
Main source of system documentation
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Toolkit Summary
Forward engineering means translating business processes and functions into applications
Reverse engineering helps examine and break down an existing application
IDE uses a built-in CASE tool included by vendors
Vendors are calling attention to ALM concepts and tools
Cloud-based toolsets will continue to grow in popularity
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kent.edu.au Kent Institute Australia Pty. Ltd. ABN 49 003 577 302 ● CRICOS Code: 00161E ● RTO Code: 90458 ● TEQSA Provider Number: PRV12051
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