Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/69

Click to flip

69 Cards in this Set

  • Front
  • Back
3 Approaches to Systems Development:
_________-Oriented Approach

_________-Oriented Approach

__________-Oriented Approach
Process

Data

Object Data
3 Approaches to Systems Development:
_________-Oriented Approach

_________-Oriented Approach

__________-Oriented Approach
Process

Data

Object Data
Separating Data and Processes that Handle Data
Process-Oriented Approach
Combines data and processes
Object-Oriented Approach
Flat File Based systems
Process Oriented Approach
Relational database based systems
Data Oriented Approach
Object-Oriented Database systems
Object-Oriented Approach
A method used by companies to create and maintain computer-based systems that perform basic business functions
Information Systems Analysis & Design
A ________ approach must be used in order to ensure success
structured
________________, __________________, and __________ are the Three Key Components of an Information System
Data
Data Flows
Processing Logic
raw facts that describe people, objects and events in an organization
Data
Groups of data that move and flow through the system
Data Flows
Steps that transform data and events that trigger the steps
Processing Logic
Systems that perform and record daily routine transactions necessary for business
Transaction Processing Systems (TPS)
Point of Sales (POS) system in retail store
Transaction Processing Systems (TPS)
Systems that serve planning, control and decision-making through routine summary and reports
Serve managers primarily interested in weekly, monthly and yearly results
Management Information Systems (MIS)
Systems that combine data, models and analysis tools for non-routine decision-making
Decision-support Systems (DSS)
Systems that support non-routine decision-making through advanced graphics and communications
Executive Support Systems (ESS)
3 Levels of information systems
1. Strategic Level Systems
2. Management Level Systems
3. Operational Level Systems
Phases of the SDLC
Planning
Analysis
Design
Implementation
Maintenance
Identify opportunity
Opportunity and problems
Analyze the feasibility
Technical, economic, and organizational
Arrange for the resources
Time, cost and people
Develop workplan
Project management
Scope management
Deliverables: feasibility analysis and workplan
Planning (why)
Study of current procedures and information systems
Gather Requirements
Recommend an alternative solution
Analysis (who, what, when and where)
system proposal
Analysis Deliverable
system specification
Design (how) Deliverable
Construction
Code and testing
Installation
Cutover, parallel conversion, and phased parallel conversion
Training
Implementation
System changed to reflect changing conditions
System obsolescence
Maintenance
Advantages of the SDLC
Structured
Less changes – less cost
Disadvantages of the SDLC
Lacks flexibility to change
Locks in users’ requirements too early
Limited user involvement
Long development period
Alternative methodology to System Development
Rapid Application Development (RAD)
An iterative process of systems development in which requirements are converted to a working system (a scaled-down version)
Prototyping
Users, Managers and Analysts work together
System requirements are reviewed
Structured meetings
Joint Application Design (JAD)
Software tools that provide automated support for phases of the systems development process
Computer-aided software engineering (CASE) tools
Used at early phases: diagramming, screen design and generation
Upper CASE
Focus on implementation phase: code and test generator
Lower CASE
Support the entire SDLC
Integrated CASE
An object-oriented systems development methodology
Rational Unified Process (RUP)
4 phases of Rational Unified Process
Inception
Elaboration
Construction
Transistion
define the scope, determine the feasibility and requirement
Inception
analysis and design
Elaboration
software is coded, tested and documented
construction
system is developed and users are trained and supported
Transition
The practice of turning over responsibility for some or all of an organization's information systems applications and operations to an outside firm
Outsourcing
_______ is the leader in software sales and services
IBM
___________ is the leader in prepackaged software production.
Microsoft
Firms like _______ and _______ are leading custom software producers.
Accenture, EDS
systems that integrate individual traditional business functions into modules enabling a single seamless transaction to cut across functional boundaries.
Enterprise Resource Planning (ERP)
_________ is the leading vendor of ERP systems
SAP AG
ex of ERP
SAP AG
Oracle/PeopleSoft
JD Edwards
an organization that providing software that can be rented by other companies over a Web or a private network, typically on a per-use or license basis
Application Service Providers
ex. Microsoft
_______________ may be the most important aspect of systems development.
Project management
A standard form for requesting or proposing systems development work within an organization
System Service Request (SSR)
A study that determines whether a requested system makes economic and operational sense for an organization
Feasibility study
A planned undertaking of related activities to reach an objective that has a beginning and an end
Project
A controlled process of initiating, planning, executing, and closing down a project
Project management
Systems analyst with management and leadership skills responsible for leading project initiation, planning, execution, and closedown
Project Manager
The end product of an SDLC phase
Deliverable
Phases of Project Management Process
Phase 1: Initiation
Phase 2: Planning
Phase 3: Execution
Phase 4: Closedown
Assess size, scope and complexity, and establish procedures.
Project Initiation
Define clear, discrete activities and the work needed to complete each activity
Project Planning
“Contract” between the IS staff and the customer regarding deliverables and time estimates for a system development project
Statement of Work (SOW)
Contains estimates of scope, benefits, schedules, costs, risks, and resource requirements
The Baseline Project Plan (BPP)
Cost-benefit analysis outlining planned expenses and revenues
Preliminary Budget
Division of project into manageable and logically ordered tasks and subtasks
Work Breakdown Structure (WBS)
horizontal bars represent task durations
Gantt chart
boxes and links represent task dependencies
Network Diagram
Plans created in prior phases are put into action.
Project Execution
Bring the project to an end.
Project Closedown
Show task durations.
Show time overlap.
Show slack time in duration.
Gantt charts
Show task dependencies.
Do not show time overlap, but show parallelism.
Show slack time in boxes.
Network diagrams