tailieunhanh - Ebook Essentials of systems analysis and design (5th edition): Part 2

(BQ) Part 2 book "Essentials of systems analysis and design" has contents: Designing the human interface, designing databases, systems implementation and operation, structuring system requirements - conceptual data modeling. | Find more at seven Chapter Objectives © Corbis Structuring System Requirements: Conceptual Data Modeling After studying this chapter, you should be able to: ½ Concisely define each of the following key data-modeling terms: conceptual data model, entity-relationship diagram, entity type, entity instance, attribute, candidate key, multivalued attribute, relationship, degree, cardinality, and associative entity. ½ Ask the right kinds of questions to determine data requirements for an information system. ½ Draw an entity-relationship (E-R) diagram to represent common business situations. ½ Explain the role of conceptual data modeling in the overall analysis and design of an information system. 188 ½ Distinguish between unary, binary, and ternary relationships, and give an example of each. ½ Distinguish between a relationship and an associative entity, and use associative entities in a data model when appropriate. ½ Relate data modeling to process and logic modeling as different ways of describing an information system. ½ Generate at least three alternative design strategies for an information system. ½ Select the best design strategy using both qualitative and quantitative methods. Find more at Chapter Preview . . . In Chapter 6 you learned how to model and an- captured during data modeling are crucial in alyze the flow of data (data in motion) between the design of databases, programs, computer manual or automated steps and how to show screens, and printed reports. For example, facts data stores (data at rest) in a data-flow diagram. such as these—a data element is numeric, a Data-flow diagrams show how, where, and when product can be in only one product line at a time, data are used or changed in an information sys- a line item on a customer order can never tem, but they do not show the definition, struc- be moved to another customer order—are all ture, and relationships within the data. .

• Đồ họa - Thiết kế - Flash
• Systems analysis
• Conceptual data modeling
• Structuring system requirements
• The human interface
• Designing databases
• Systems implementation
• 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
• 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