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Building Information Systems (approaches in the digital era (Agile…
Building Information Systems
technology-enabled change
automation
rationalization of procedures
business process redisign
paradigm shift
Systems development process
witch have core activities
testing
production
conversion
programming
maintenance
systems analysis
is
the study and analysis of problem of existing systems
the identification of requirements for their solutions
systems design
provides
show how technical and organizational components fit together
specifications for an information system solution
principal methodologies for modeling and designing IS
Object-orientated Development
Combine processes and data
Based on
Concepts of Class
&
Inheritance
models a system as a colletion of objects
Structured Methodologies
data separately
modeling processes
Based on
Data flow
&
Structure Chart
approaches in the digital era
Companies are turning to:
RAD
- Rapid Application Design
uses
fourth-generation tools for very rapid creation of systems
prototyping
visual programming
object-oriented software
JAD
- Joint Application Design
Agile development
, and
Reusable Software
components
breaks large project into
completed in short periods of time
using iteration and continuous feedback
series of small subprojects
provide
common set of standards
enable organizations to link their systems
regardless of their technology platform through standard plug andplay architecture
to accelerate the systems development process
composed by
Business Process Management
useful
promoting total quality management (TQM)
six sigma
redesign work flows and business processes
alternative methods
Prototyping
building an experimental system rapidly and inexpensively for end users to interact with and evaluate
can result in systems that have not been completely tested or documented or that are technically inadequate for a production environment
End-user
development of information systems by end users, either alone or with minimal assistance from information systems specialists
can be created rapidly and informally using user-friendly software tools
Systems Life Cycle
(oldest method)
requires that information systems be developed in formal stages
useful for large projects, but it is very rigid and costly
stages must proceed sequentially and have defined outputs
Outsourcing
using an external vendor to build (or operate) a firm’s information systems
Software Package
reduces the amount of design, programming, testing, installation, and maintenance work required to build a system
helpful if a firm does not have the internal information systems staff or financial resources to custom develop a system