system analysis and design methods whitten download

... Information System Building Blocks Trang 2Objectives information systems. architecture in systems development. system owners and system users with a perspective of an information system. system designers ... organize and view the fundamental building blocks of information systems. Trang 9High-Level Goals of System Owners and System Users people collaboration Trang 10Technology Perspectives of System Designers ... Concerned with the information system’s inputs and outputs Trang 23Views of COMMUNICATION (cont.) • Concerned with the technical design of both the user and the system-to-system communication interfaces

Ngày tải lên: 10/01/2018, 16:06

... versus Methodology • System life cycle – the factoring of the lifetime of an information system into two stages, (1) systems development and (2) systems operation and maintenance • System development ... activities, methods, best practices, deliverables, and automated tools that stakeholders (Chapter 1) use to develop and continuously improve information systems and software (Chapters and 2) 3-4 ... The standardized system development process is continuously monitored and improved based on measures and data analysis established in Level Capability Maturity Model (CMM) 3-6 Impact of System

Ngày tải lên: 10/01/2018, 16:06

... Trang 2• Define the terms project and project management, and differentiate between project and process management. • Describe causes of failed information systems and technology projects. • Describe ... • Assign resources and produce a project schedule with a Gantt chart. • Assign people to tasks and direct the team effort. • Use critical path analysis to adjust schedule and resource allocations ... schedule and budget deviations. • Manage user expectations of a project and adjust project scope Trang 34-3Trang 4Projects and Project ManagersProject – a [temporary] sequence of unique, complex, and

Ngày tải lên: 10/01/2018, 16:06

... requirements analysis, logical design, and decision analysis phases in terms of information system building blocks • Describe scope definition, problem analysis, requirements analysis, logical design, and ... requirements analysis, logical design, and decision analysis phases • Describe a number of systems analysis approaches for solving business system problems • Describe scope definition, problem analysis, ... purpose Systems design – a complementary problem-solving technique (to systems analysis) that reassembles a system’s component pieces back into a complete system—hopefully, an improved system

Ngày tải lên: 10/01/2018, 16:06

... interactions between the system and external systems and users • graphically describes who will use the system and in what ways the user expects to interact with the system 7-9 Use-case narrative ... 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 ... specifications for designing user and system interfaces • Provides means of defining database access requirements • Provides framework for driving the system development project 7-8 System Concepts

Ngày tải lên: 10/01/2018, 16:06

... 1Chapter 8Data Modeling and Analysis Trang 2• Define data modeling and explain its benefits. • Recognize and understand the basic concepts and constructs of a data model. • Read and interpret an entity ... 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 ... 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

Ngày tải lên: 10/01/2018, 16:06

... • • • • • • Define systems modeling and differentiate logical and physical models Define process modeling and explain its benefits Recognize and understand basic concepts and constructs of a ... a system and the work or processing performed by the system Synonyms are bubble chart, transformation graph, and process model • The DFD has also become a popular tool for business process redesign ... what a system is or does Synonyms or essential model, conceptual model, and business model 9-4 Physical model – a technical pictorial representation that depicts what a system is or does and how

Ngày tải lên: 10/01/2018, 16:06

... interactions between the system and external systems and users In other words it graphically describes who will use the system and in what ways the user expects to interact with the system The use-case ... 1Chapter 10Object-Oriented Analysis and Modeling Using the UML Trang 2Objectives • Define object modeling and explain its benefits • Recognize and understand the basic concepts and constructs of object ... of the system. 2 Finding and identifying the business objects. 3 Organizing the objects and identifying their relationships. Trang 24Construction the Analysis Use-Case Model System analysis

Ngày tải lên: 10/01/2018, 16:06

... Tools for Input Design and Prototyping • Old Tools • Record Layout Charts • Display Layout Charts • Newer Prototyping Tools Trang 23Input Design Process 1 Identify system inputs and review logical ... associated with online and real-time processing Touch Screen Same as above. Data is entered o a touch screen display or handheld device Data entry users either touch commands and data choices or ... requires rigid command menu structure and limited input options Data is almost always processed immediately as a transaction or inquiry Speech Same as sound Data (and commands) is spoken This

Ngày tải lên: 10/01/2018, 16:06

... Trang 6Commandments of User Interface Design• Understand your users and their tasks • Involve the user in interface design • Test the system on actual users • Practice iterative design. Trang ... Interfaceswidely accepted command language that can be used to invoke actions defined for custom information systems. • Commands unique to that system and meaningful to user questions and command in their native ... Interfaces Styles and Considerations• Windows and frames • Menu-driven interfaces • Pull-down and cascading menus • Tear-off and pop-up menus • Toolbar and iconic menus • Hypertext and hyperlink

Ngày tải lên: 10/01/2018, 16:06

... 18Object-Oriented Design and Modeling Using the UML Trang 2• Understand entity, interface, control, persistence, and system classes. • Understand the concepts of dependency and navigability. ... 33Transforming Analysis Class Diagram to Design Class Diagram• Add design objects to diagram • Add attributes and attribute-type information to design objects • Add attribute visibility • Add methods to design ... Cases Trang 14Design Use CaseTrang 15Design Use Case (continued)Trang 16Design Use Case (continued)Trang 17Design Use Case (concluded)Trang 18Modeling Class Interactions, Behaviors, and States•

Ngày tải lên: 10/01/2018, 16:06

... 20Systems Operations and Support Trang 2Objectives • Define systems operations and support. • Describe relative roles of a repository, program library, and database in systems operations and ... other words, reports and outputs • Requirements that exceed this should be subjected to systems analysis and design to consider implications. • Can be written in 4GLs Trang 20System Enhancement ... system is a system that has been placed into operation Frequently called a production system. Support versus Operation Trang 5The Context of Systems Operation and SupportTrang 6Systems Development,

Ngày tải lên: 10/01/2018, 16:07

... Modern Systems Analyst  Preparing For a Career as a Systems Analyst Systems Analysis and Design Skills   All systems analysts need thorough and ongoing training in systems analysis and design Systems ... What is a Systems Analyst?   Systems analysts are people who understand both business and computing Systems analysts study business problems and opportunities and then transform business and information ... Systems Analyst Who Should Read This Book  The Systems Analyst - A Key Resource  The systems analyst performs systems analysis and design  Systems analysis is the study of a business problem domain

Ngày tải lên: 10/01/2018, 16:08

... S T S SYSTEM BUILDERS SYSTEM DESIGNERS SYSTEM USERS SYSTEM OWNERS Data Technology INFORMATION SYSTEM COMPONENTS (the actual, technical implementation of the system) INFORMATION SYSTEM DESIGN ... of Information Systems  System Builders based upon the design specifications from the system designers In many cases, the system designer and builder for a component are one and the same builder ... DESIGNERS (specification) SYSTEM USERS (requirements) SYSTEM OWNERS (scope) System Builders' views of DATA System Designers' views of DATA System Users' views of DATA System Owners' views of DATA

Ngày tải lên: 10/01/2018, 16:08

... refine and improve the system Information System Development INFORMATION SYSTEMS FRAMEWORK SYSTEM OWNERS (scope) System Development FOCUS ON SYSTEM DATA FOCUS ON SYSTEM PROCESSES FOCUS ON SYSTEM ... cycle consists of four phases:  systems survey  systems analysis  systems design  systems implementation  A fifth activity, systems support, refines the resulting system by iterating through ... and foremost, a problem-solving approach to building systems The classical problem-solving approach is as follows:  Study and understand the problem (opportunity, and/or directive) and its system

Ngày tải lên: 10/01/2018, 16:08

... together system owners, users, analysts, designers, and builders to jointly define and design systems Synonyms include joint application design and joint Trang 17Systems AnalysisStrategies for Systems ... What is System Analysis?  For this presentation we will use the following definition:  Systems analysis is (1) the survey and planning of the system and project, (2) the study and analysis ... Trang 7Systems AnalysisStrategies for Systems Analysis and Problem Solving  Modern Structured Analysis  Structured analysis was one the first formal strategies developed for systems analysis

Ngày tải lên: 10/01/2018, 16:08

... ModelingAn Introduction to Systems Modeling a thousand words, most system models are pictorial representations of reality understand those systems, or for proposed systems as a way to document ... PROCESSESFOCUS ON SYSTEM INTERFACES Existing Applications and Technology Existing Interfaces and Technology Existing Networks and Technology FOCUS ON SYSTEM GEOGRAPHY Definition Phase (establish and prioritize ... sampling of existing forms and files; research of similar systems; surveys of users and management; and interviews of users and management simultaneously constructing and verifying the data models

Ngày tải lên: 10/01/2018, 16:08

... by a system’s PROCESSES methods (DFDs). through a system and the work or processing performed by that system Synonyms include bubble chart, transformation graph, and Trang 8FOCUS ON SYSTEM ... the application of formal systems theory and concepts to systems problem solving are organized, and how they work useful real-world systems Trang 13outputs, and the system itself – viewed a process ... Introduction to System Modeling  System Models problems a thousand words, most system models are pictorial representations of reality Trang 4Process ModelingAn Introduction to System Modeling  System

Ngày tải lên: 10/01/2018, 16:09

... and Design? System development can generally be thought of having two major components: systems analysis and systems design. In System Analysis more emphasis is given to understanding the details ... done. 2.2.3. Design of System After the system has been analyzed by the analyst, the design stage of system life cycle begins. In design phase, the structure or design for the proposed system is ... between analysis and design? Can one begin to design without analysis? Why 2.11. Summary of System Development Life Cycle Models Key points covered in this lesson are >>The system& apos;s...

Ngày tải lên: 27/10/2013, 23:15

... three-phase system are only half those of the three separate single-phase systems, and the line-voltage drop between the source and load in the three-phase system is half that of each single-phase system. ... maintaining system standards and reliability. NERC coordinates its e¤orts with FERC and other organizations such as the Edison Electric Institute (EEI) [10]. As shown in Figure 1.3, the transmission system ... functions for both the distributed energy system and the local electric power system that allow paral- leling and disconnection from the electric power system. These power electronic interfaces...

Ngày tải lên: 30/03/2014, 07:20