TAILIEUCHUNG - Lecture Systems analysis and design methods (7/e): Chapter 8 – Whitten, Bentley

In this chapter you will learn how to use a popular data-modeling tool, entity relationship diagrams, to document the data that must be captured and stored by a system, independently of showing how that data is or will be used—that is, independently of specific inputs, outputs, and processing. You will also learn about a data analysis technique called normalization that is used to ensure that a data model is a “good” data model. | Chapter 8 Data Modeling and Analysis Objectives Define data modeling and explain its benefits. Recognize and understand the basic concepts and constructs of a data model. Read and interpret an entity relationship data model. Explain when data models are constructed during a project and where the models are stored. Discover entities and relationships. Construct an entity-relationship context diagram. Discover or invent keys for entities and construct a key-based diagram. Construct a fully attributed entity relationship diagram and describe data structures and attributes to the repository. Normalize a logical data model to remove impurities that can make a database unstable, inflexible, and nonscalable. Describe a useful tool for mapping data requirements to business operating locations. 8- 8- Data Modeling Data modeling – a technique for organizing and documenting a system’s data. Sometimes called database modeling. Entity relationship diagram (ERD) – a data model utilizing .

• Kỹ thuật lập trình
• Systems analysis
• Design methods
• Data modeling
• Phân tích hệ thống
• Thiết kế hệ thống
• Entity relationship diagram
• 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
• Modeling system requirements
• Use case modeling
• 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