Toolkit 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 3

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 In addition, 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

Overview of CASE Tools

Overview of CASE Tools CASE Tools History Modern languages – non-procedural or event-driven Object-oriented programming languages (OOPL) Fourth-generation languages (4GLs) Fourth-generation environment

Overview of CASE Tools The Marketplace for CASE Tools Includes a wide variety of vendors and products, and no one tool dominates the market Express Editions VisioModeler Object-role modeling (ORM)

Overview of CASE Tools The Marketplace for CASE Tools

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

CASE Terms and Concepts Repository

CASE Terms and Concepts Individual Tools Modeling tools Documentation tools Engineering tools Forward engineering Reverse engineering

CASE Terms and Concepts Individual Tools Construction tools Application generator – code generator Screen generator – form painter Report generator – report writer Mock-up report

Integrated Development Environments Integrated development environment (IDE) Examples of Integrated Development Environments Oracle Designer Microsoft’s Visual Studio 2005

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

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, Telelogic Software, and Rational Software

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

CASE Tool Examples System Architect Telelogic 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

CASE Tool Examples Rational Software IBM’s Rational Software offers a wide range of systems development and modeling products Rational Software Architect Rational Edge

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

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 2005

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

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 49

Toolkit Summary Forward engineering means translating business processes and functions into applications A CASE tool can handle many program development tasks 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 49

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