1SysDev

Question 1

Used to develop and maintain computer-based information systems

Answer 1

Information Systems Analysis and Design

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Computer software designed to support organizational functions or processes

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Application Software

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Organizational role most responsible for analysis and design of information systems

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Systems Analyst

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focused on efficient automation of existing process

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1950s

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Advent of procedural third-gen languages faster and more reliable computers

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1960s

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System development becomes more like an engineering discipline

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1970s

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Major breakthrough with 4GL, CASE tools

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1980s

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Focused on system integration, GUI applications

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1990s

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Web app development, wireless PDAs and smart phones

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New century

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A STANDARD PROCESS followed by an ORGANIZATION to CONDUCT all steps necessary to analyze, design, implement

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System Development Methodology

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Traditional Methodology used to develop, maintain, and replace information systems

Answer 11

Systems Development Life Cycle

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Phases of SDLC

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Planning
Analysis
Design
Implementation
Maintainance

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An organization’s total information system needs are identified, analyzed, prioritized and arranged

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Planning

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System requirements are studied and structured

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Analysis

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A description of the recommended solution is converted into logical and then physiscal system specifications

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Design

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All functional features of the system chosen for development in analysis are described INDEPENDENTLY OF ANY COMPUTER PLATFORM

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Logical design

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The logical specifications of the system from logical are transformed into tecnology-specific details

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Physiscal design

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The IS is coded, tested, installed and supported in the organization

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Implementation

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An IS is systematically repaired and improved

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Maintainance

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Different approaches to improving development

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CASE TOOLS
Agile Methodologies
eXtreme Programming

Question 21

Used to AUTOMATE SOME TASKS in SYSTEM DEVELOPMENT OF Information Sytems

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Computer-Aided Software Engineering (CASE Tools)

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it enable GRAPHICAL REPRESENTATION

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Diagramming tools

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Helps prototype how system “Looks and feel”

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Computer display and report generators

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Automatically check for CONSISTENCY IN DIAGRAMS forms, and reports

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Analysis tools

Question 25

Provides INTEGRATED STORAGE OF DIAGRAMS, reports…

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Central Repository

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STANDARDIZE TECHNICAL and USER DOCUMENTATION

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Documentation Generators

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Enable AUTOMATIC GENERATION OF PROGRAMS and databases

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Code Generators

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CASE tool

Answer 28

1. Diagramming tools
2. Computer displays and report generators
   3.Analysis Tools
   4.Central Repository
   5.Documentation Generators
   6.Code Generators

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Motivated by recognition of software development as fluid, unpredictable…

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Agile methodologies

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3 key principle of Agile Methodologies

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Adaptive rather than predictive
Emphasize people rather than roles
Self-adaptive processes

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SHORT, INCREMENTAL DEVELOPMENT CYCLES

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eXtreme programming

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Focuses on AUTOMATED TESTS

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eXtreme Programming

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Coding, testing listening, designing

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eXtreme Programming

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Coding and testing operate together

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eXtreme Programming

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Combines data and processes(called methods) into single entities called objects

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Object-oriented analysis and design

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Allows the creation of new classess

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Inheritance