systems analysis and design methods whitten pdf

... Trang 2Objectives information systems. architecture in systems development. system owners and system users with a perspective of an information system. system designers and builders with a perspective ... system. relates to Knowledge, Processes, and Communications building blocks. Trang 42-4Trang 5Front- and Back-Office Information Systems • Front-office information systems support business functions ... 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

Ngày tải lên: 10/01/2018, 16:06

... estimate and assign resources (including people and costs), schedule activities and resources, monitor progress against schedule and budget, control and modify schedule and resources, and report ... two stages, (1) systems development and (2) systems operation and maintenance • System development methodology – a formalized approach to the systems development process; a standardized development ... activities, methods, best practices, deliverables, and automated tools that system developers and project managers are to use to develop and continuously improve information systems and software

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, ... methodologies for systems analysis and design 5-36 Key Terms of Requirements Analysis Phase (cont.) Timeboxing – a technique that delivers information systems functionality and requirements through

Ngày tải lên: 10/01/2018, 16:06

... 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 ... Standish Group International, Inc., “Chaos: A Recipe for Success” User-Centered Development and Use-Case Modeling User-centered development – a process of systems development based on understanding ... diagram that depicts the 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

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 ... adjectives and adverbs are not permitted • Blocking and indentation are used to set off the beginning and ending of constructs • User readability should always take priority Policies and Decision ... data flow diagrams and describe the elementary data flows in terms of data structures and procedural logic Document the distribution of processes to locations Synchronize data and process models

Ngày tải lên: 10/01/2018, 16:06

... 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 ... UML and its various types of diagrams. • Evolve a business requirements use-case model into a system analysis use-case model. • Construct an activity diagram. • Discover objects and classes, and ... Use Case Depicts 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

Ngày tải lên: 10/01/2018, 16:06

... Chapter 16 Input Design and Prototyping Trang 2Objectives • Define the appropriate format and media for a computer input. • Explain the difference between data capture, data entry, and data input. ... 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

... into a design of a user interface • Integrate output and input design into an overall user interface that establishes the dialogue between users and computer • Understand role of operating systems, ... 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 ... 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

... 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 ... 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. ... 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 ... data • Inputting new data • In other words, reports and outputs • Requirements that exceed this should be subjected to systems analysis and design to consider implications. • Can be written in ... production system. Support versus Operation Trang 5The Context of Systems Operation and SupportTrang 6Systems Development, Operation, and Support Functions Trang 7Three Important Data Stores• The

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

... significantly expanded the power and potential of most information systems. combination of computer technology (hardware and software) with telecommunications technology (data, image, and voice networks) ... Fundamentals of Information Systems  Personal and Work Group Information Systems typically are built using personal computer technology and software. needs of a single user They are designed to boost ... Information Systems the information system on a regular basis – capturing, validating, entering, responding to, storing, and exchanging data and information • Clerical and service workers • Technical and

Ngày tải lên: 10/01/2018, 16:08

... form, the life cycle consists of four phases:  systems survey  systems analysis  systems design  systems implementation  A fifth activity, systems support, refines the resulting system by ... suitable solution  Identify candidate solutions and select the ``best'' solution  Design and/or implement the solution  Observe and evaluate the solution's impact, and refine the solution accordingly ... first 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

Ngày tải lên: 10/01/2018, 16:08

... analysts, designers, and builders to jointly define and design systems Synonyms include joint application design and joint Trang 17Systems AnalysisStrategies for Systems Analysis and Problem ... Trang 7Systems AnalysisStrategies for Systems Analysis and Problem Solving  Modern Structured Analysis  Structured analysis was one the first formal strategies developed for systems analysis ... becomes the design blueprint for constructing the final system Trang 9Systems AnalysisStrategies for Systems Analysis and Problem Solving  Modern Structured Analysis  Modern structured 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 ... INTERFACES Existing Applications and Technology Existing Interfaces and Technology Existing Networks and Technology FOCUS ON SYSTEM GEOGRAPHY Definition Phase (establish and prioritize business system ... include primary, alternate keys, and foreign keys, plus precise cardinalities and any generalization hierarchies attributes and subsetting criteria. domains, and defaults. Trang 41Data ModelingThe

Ngày tải lên: 10/01/2018, 16:08

... is 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 ... for organizing and documenting the structure and flow of data through a system’s PROCESSES and/or the logic, policies, and procedures to be implemented by a system’s PROCESSES methods (DFDs). ... understand when viewed as a whole (meaning, as a single process)? • In systems analysis we separate a system into its component subsystems, which in turn are decomposed into smaller subsystems,

Ngày tải lên: 10/01/2018, 16:09

... Oriented Analysis and Design 12. Designing the Human Interface 13. Systems Implementation and Operation myriam.lewkowicz@u tt.fr 31 General Types of Information Systems Management Information Systems Types ... components: Technology, people, organizations Understand IS career opportunities Understand types of information systems Understand IS and organizational success or failure Understand the future of IS management myriam.lewkowicz@u tt.fr 46 Enterprise ... 4 Enterprise-Wide Information Systems myriam.lewkowicz@u tt.fr 45 Chapter Objectives Understand how information technology supports business activities Understand enterprise systems and how they evolved Understand software...

Ngày tải lên: 04/11/2013, 19:15

... superscripts and denote incident and scattered fields. The quantities are in general complex and the subscripts 1 and 2 represent any combina- tion of orthogonal polarizations. More precisely, , and ... instantaneous total electric field, (2.9) where and are unit vectors along the x and y directions, respectively. At , and , then by replacing by the ratio and by using trigonometry properties Eq. (2.9) can ... polarization ellipse becomes a cir- cle, and the resultant wave is then called circularly polarized. Alternatively, when and the wave becomes linearly polarized. Eqs. (2.7) and (2.8) can be combined to...

Ngày tải lên: 08/04/2014, 10:27