systems analysis and design methods 7th ed

... business knowledge and helps managers make decisions • Business entities and business rules • System users’ view 2-14 • View data as something recorded on forms, stored in file cabinets, recorded in ... appropriate checks and approvals are implemented Views of PROCESS (cont.) • System designers’ view • Concerned with which processes to automate and how to automate them • Constrained by limitations ... 2-22 • Concerned with the information system’s inputs and outputs Views of COMMUNICATION (cont.) • System designers’ view • Concerned with the technical design of both the user and the system-to-system

Ngày tải lên: 10/01/2018, 16:06

... 4—Managed: Measurable goals for quality and productivity are established • Level 5—Optimizing: The standardized system development process is continuously monitored and improved based on measures and ... processes and practices established to track project costs, schedules, and functionality • Level 3—Defined: Standard system development process (methodology) is purchased or developed All projects ... stages, (1) systems development and (2) systems operation and maintenance • System development methodology – a formalized approach to the systems development process; a standardized development

Ngày tải lên: 10/01/2018, 16:06

... project and project management, and differentiate between project and process management Describe causes of failed information systems and technology projects Describe basic competencies required ... 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 in response to schedule ... Summary of progress A Schedule analysis B Budget analysis C Scope analysis (changes that may have an impact on future progress) D Process analysis (problems encountered with strategy or methodology)

Ngày tải lên: 10/01/2018, 16:06

... solution cost-effective? • Schedule feasibility – Can the solution be designed and implemented within an acceptable time period? 5-42 Candidate Systems Matrix 5-43 Candidate Systems Matrix (cont.) 5-44 ... 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 ... locations) where systems analysts, systems designers, and system builders keep all of the documentation associated with one or more systems or projects • Network directory of computer-generated files

Ngày tải lên: 10/01/2018, 16:06

... Expanded Version of a Use-Case Narrative 7-31 continued Sample Expanded Version of a Use-Case Narrative (cont) 7-32 continued Sample Expanded Version of a Use-Case Narrative (cont) 7-33 concluded ... Success” 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 ... 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

Ngày tải lên: 10/01/2018, 16:06

... flexible and adaptable to future needs 8-42 Data Analysis & Normalization Data analysis – a technique used to improve a data model for implementation as a database Goal is a simple, nonredundant, ... 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 ... Modeling and Analysis McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc All Objectives • • • • • • • • • • Define data modeling and explain its benefits Recognize and understand

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 ... process • Based on the relative strengths of structured programming and natural English 9-56 Structured English Constructs (Part 1) 9-57 Structured English Constructs (Part 2) 9-58 Structured English ... may be used • Only names that have been defined in project dictionary may be used • Formulas should be stated clearly using appropriate mathematical notations • Undefined adjectives and adverbs

Ngày tải lên: 10/01/2018, 16:06

... Object-Oriented Analysis and Modeling Using the UML McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc All Objectives 10-2 • Define object modeling and explain its benefits • Recognize and ... diagram • Discover objects and classes, and their relationships • Construct a class diagram 10-3 Introduction to Object Modeling Object-oriented analysis (OOA) – an approach used to study existing ... product availability and determines an expected ship date, determines the price to be charged to the member, and determines the cost of the total order If an item is not immediately available it

Ngày tải lên: 10/01/2018, 16:06

... batch processing, the entered data is collected into files called batches and processed as a complete batch • In on-line processing, the captured data is processed immediately • In remote batch ... is entered and edited on-line, but collected into batches for subsequent processing Input Implementation Methods • • • • • • Keyboard Mouse Touch Screen Point-of-sale terminals Sound and speech ... 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

... Language-based syntax is built around a widely accepted command language that can be used to invoke actions • SQL • Mnemonic syntax is built around commands defined for custom information systems • Commands ... problem-solving approaches • Design inconsistency Commandments of User Interface Design 17-6 • Understand your users and their tasks • Involve the user in interface design • Test the system on ... factors and guidelines and incorporate them 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

Ngày tải lên: 10/01/2018, 16:06

... between design patterns, object frameworks, and components Understand the use of communication diagrams, component diagrams, and deployment diagrams 18-3 Object-Oriented Design Object-oriented design ... Public attributes /methods can be accessed/invoked by any other method in any other object or class Denoted by the + symbol • Protected attributes /methods can be accessed/ invoked by any method ... persistence, and system classes Understand the concepts of dependency and navigability Define visibility and explain its three levels Understand the concept object responsibility and how it is related

Ngày tải lên: 10/01/2018, 16:06

... Restructuring stored data • Updating stored data • Inputting new data 20-19 • In other words, reports and outputs • Requirements that exceed this should be subjected to systems analysis and design to ... of Systems Operation and Support 20-5 Systems Development, Operation, and Support Functions 20-6 Three Important Data Stores • The repository is a data store(s) of accumulated system knowledge—system ... data created and maintained by the production application programs Systems Support Activities 20-8 System Support Activities • System maintenance corrects “bugs” or errors that slipped through

Ngày tải lên: 10/01/2018, 16:07

... systems analysts need thorough and ongoing training in systems analysis and design Systems analysis and design skills can be conveniently factored into three subsets:  concepts and principles  ... 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 ... Modern Systems Analyst  Preparing For a Career as a Systems Analyst Interpersonal Relations Skills    Systems work is people-oriented and systems analysts must be extroverted or people-oriented

Ngày tải lên: 10/01/2018, 16:08

... management-oriented reporting, usually in a predetermined, fixed format Information System Building Blocks A Review of Fundamentals of Information Systems  Decision Support Systems  Decision Support Systems ... making situation arises When applied to executive managers, these systems are sometimes called executive information systems A DSS is designed to support unstructured decisions Information System ... System Designers’ View of Interfaces  System designers must be concerned the details of both user and system interfaces  System designers are concerned with consistency, completeness, and user

Ngày tải lên: 10/01/2018, 16:08

... by which systems analysts, software engineers, programmers, and end-users build information systems and computer applications to solve business problems and needs It is sometimes called an application ... each phase, (2) individual and group roles to be played in each activity, (3) deliverables and quality standards for each activity, and (4) tools and techniques to be used for each activity A true ... 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

Ngày tải lên: 10/01/2018, 16:08

... outputs, and files required to respond to business events Systems Analysis Strategies for Systems Analysis and Problem Solving  Modern Structured Analysis  Structured analysis introduced an overall ... discovered Systems Analysis Strategies for Systems Analysis and Problem Solving  Modern Structured Analysis  Structured analysis was one the first formal strategies developed for systems analysis of ... What is System Analysis? Strategies for Systems Analysis and Problem Solving The Survey Phase of Systems Analysis The Study Phase of Systems Analysis The Definition Phase of Systems Analysis The

Ngày tải lên: 10/01/2018, 16:08

... 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 ... 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 ... 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 ...

Ngày tải lên: 04/11/2013, 19:15

... Oriented Analysis and Design 12. Designing the Human Interface 13. Systems Implementation and Operation 29 General Types of Information Systems Data input Manual data entry Semiautomated data ... Objectives Understand the term information systems (IS) Understand IS components: Technology, people, organizations Understand IS career opportunities Understand types of information systems Understand IS and ... material, unformatted information Information: processed data (meaningful) Knowledge: understanding relationships between pieces of information Wisdom: knowledge accumulated and applied ...

Ngày tải lên: 22/03/2014, 21:21

... matrix, and is denoted by . When an arbitrarily linearly polarized wave is incident on a target, the backscattered field is then given by (2.19) The superscripts and denote incident and scattered ... pulse trailing edge strikes target 2 the leading edge would have traveled backwards a distance , and the returned pulse would be composed of returns from both targets (i.e., unresolved return), ... steered in azimuth. Figure 1.22b shows a stacked beam search pattern; here the beam has to be steered in azi- muth and elevation. This latter kind of search pattern is normally employed by phased...

Ngày tải lên: 08/04/2014, 10:27

... Imaging Systems: Analysis and Design In the EP process, as the electrostatic image is developed with a charged pigmented thermoplastic powder that is transferred and fused to paper under heat and ... prepress area and DFE for digital printing. 4 Control of Color Imaging Systems: Analysis and Design color management software, multimedia handling software (speech to text conversion) are used heavily. ... print engine (tandem architecture). 8 Control of Color Imaging Systems: Analysis and Design with offset print ing. Understanding some of the key steps involved in the printing and publishing...

Ngày tải lên: 05/06/2014, 12:01