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CHAPTER1: Introduction to System Analysis & Design - Coggle Diagram
CHAPTER1: Introduction to System Analysis & Design
impact IT on business
IT: combination of hardware&software product and service that companies use to manage, access, communicate and share information
future shape
changes in world
changes in technology
changes in client demand
SYSTEMS DEVELOPMENT: developt by technically qualified, business oriented,high motivated, good communicator, strong analytical and critical thinking ppl
SYSTEM ANALYSIS& DESIGN: step-by-step process; System analys: plan,develop&maintain information systems
information system developer
in-house applications
software packages
internet-based application services
outsourcing
custom solutions
enterprise-wide software strategies
information system(IS) components
related components that
produces specific
data vs information
data: basic fact which is system's raw
material
information: data that been transform
into valuable output for user
components
hardware: physical layer of IS
software: program& other operating
information used by computer
data: table store data
:linked table works together to supply data
process: desc task & business fx that user,
manager& IT staff perform to achieve result
people:-stakeholder
-user/end-user
Business IS
function&features
enterprise computing systems
transaction processing systems
Business support systems
knowledge management systems
user productivity systems
integration
large companies require system that combine transaction processing, business support, knowledge management & user productivity features
needed information
system development tools
modelling
business model, requirement model, data model,
object model, network model, process model
prototyping
use prototype
speed up process
important decision made early before
businesses or IT issues thoroughly understood
extremely valuable
computer-aided system engineering(CASE)
can generate program code,
speed implementation process
SDLC
system planning
system analysis
system design
system implementation
system support & security
system development method
structured analysis
predictive approach
process-centered technique
based on waterfall model
deliverable/end-product
object-oriented analysis
interactive model
follow series of analysis&design phase
agile method
continuos feedback
agile process detemine end result
