tailieunhanh - Lecture Systems analysis and design methods (7/e): Chapter 7 – Whitten, Bentley

In this chapter you will learn about the tools and techniques necessary to perform usecase modeling to document system requirements. Capturing and documenting system requirements have proved to be critical factors in the outcome of a successful information systems development project. Documenting the requirements from the perspective of the users in a manner that they can understand promotes user involvement, which greatly enhances the probability for the success of the project. | Chapter 7 Modeling System Requirements with Use Cases Objectives Describe the benefits of use-case modeling. Define actors and use cases and be able to identify them from context diagrams and other sources. Describe the relationships that can appear on a use-case model diagram. Describe the steps for preparing a use-case model. Describe how to construct a use-case model diagram. Describe the various sections of a use-case narrative and be able to prepare one. Define the purpose of the use-case ranking and priority matrix and the use-case dependency diagram. 7- 7- An Introduction to Use-Case Modeling One of the primary challenges is the ability to elicit the correct and necessary system requirements from the stakeholders and specify them in a manner understandable to them so those requirements can be verified and validated. The hardest single part of building a software system is deciding precisely what to build. No other part of the conceptual work is a difficult as . | Chapter 7 Modeling System Requirements with Use Cases Objectives Describe the benefits of use-case modeling. Define actors and use cases and be able to identify them from context diagrams and other sources. Describe the relationships that can appear on a use-case model diagram. Describe the steps for preparing a use-case model. Describe how to construct a use-case model diagram. Describe the various sections of a use-case narrative and be able to prepare one. Define the purpose of the use-case ranking and priority matrix and the use-case dependency diagram. 7- 7- An Introduction to Use-Case Modeling One of the primary challenges is the ability to elicit the correct and necessary system requirements from the stakeholders and specify them in a manner understandable to them so those requirements can be verified and validated. The hardest single part of building a software system is deciding precisely what to build. No other part of the conceptual work is a difficult as establishing the detailed technical requirements, including all the interfaces to people, to machines, and to other software systems. No other work so cripples the resulting system if done wrong. No other part is more difficult to rectify later. Fred Brooks 7- IS Development Project Track Record Source: The Standish Group International, Inc., “Chaos: A Recipe for Success” canceled before completion Over budget, late, or without needed features 7- User-Centered Development and Use-Case Modeling User-centered development – a process of systems development based on understanding the needs of the stakeholders and the reasons why the system should be developed. Use-case modeling – the process of modeling a system’s functions in terms of business events, who initiated the events, and how the system responds to those events. Use-case modeling has roots in object-oriented modeling. Gaining popularity in non-object development environments because of its usefulness in communicating with users.

• Kỹ thuật lập trình
• Systems analysis
• Design methods
• Modeling system requirements
• Use cases
• Phân tích hệ thống
• Thiết kế hệ thống
• Information systems
• Systems design
• Introduction to systems analysis and design
• Model driven analysis
• Accounting information systems
• Hệ thống thông tin kế toán
• Lecture Accounting information systems
• Systems development
• Systems development life cycle
• Analysis modeling
• Design modeling
• Systems development methodologies
• Unified process
• Object oriented analysis
• Object modeling
• Feasibility analysis
• The system proposal
• System development
• Information systems development
• Model driven strategy
• Systems construction
• Implementation phase
• Accounting information systems
• Lecture Accounting information systems
• Systems Analysis and Design
• Assuming the Role of the Systems Analyst
• Integrating New Technologies into Traditional Systems
• Web Systems
• Wireless Systems
• Open Source Software
• Design in a Changing World
• Types of information systems
• Internal system users
• Business process redesign
• Project management
• Process management
• Fact finding techniques
• Requirements discovery
• Use case modeling
• Data modeling
• Entity relationship diagram
• Process modeling
• Application architecture
• Physical data flow diagram
• Database design
• Data architecture
• Output design
• Internal outputs
• Input design
• Input implementation methods
• User interface design
• Human engineering guidelines
• Object oriented design
• Design classes