System Planning Flashcards
(40 cards)
Designed by individuals working in the field of artificial intelligence.
Expert systems
Advantages of expert systems
Consistency in decision making
A central knowledge depository
Ability to review answers and generate reports
Given a set input, the returned answer is always the same
consistency in decision making
Manages larger database of information than most human experts.
A central knowledge depository
Allows decision makers unfettered access to information they need at any given time.
Ability to review answers and generate reports
Disadvantages of Expert systems
Software lacks “common sense”
The logic is “locked down”
Programming difficulties
Not adaptable
Elements of a system
Interdependency
inputs
process
output
control
feedback
Must be multiple components that interact with each other in a concerted way
Interdependency
Data that is placed into the system from an external source - system users
Inputs
The overall functionality that the system contributes its various components towards achieving
Process
The product of the system. The end result of the various interdependent components of the system.
Output
Operation that works to prevent or correct problems as they occur throughout the process.
Control
An internal control mechanism that allows for the detection and correction of processing problems.
Feedback
Two types of systems
open and closed
These type of systems do not have fixed or permanent boundaries but are instead constantly being re-defined as they interact with the environment.
Open Systems
This type of system is self- contained and isolated from the environment (including other systems).
Closed systems
The boundaries of this type of system are distinct and fixed.
Closed systems
This type of system does not receive input from the environment and all output is contained within the system.
Closed systems
All adaptations must originate from the vendor
Closed systems
A group of computers linked together to increase efficiency or distribute computing power.
network system
What is the key reason to use a network system in a healthcare facility?
Data & all users use the same software making it easier for users to share information
Phases of the System Development Life Cycle
Needs assessment
System selection
Implementation
Maintenance
The phase where business requirements are collected from the future users of the system
Needs assessment
The phase where an information system is selected that can meet all of the gathered business requirements
System selection