unit 3 his second shift Flashcards
what are informtation systems?
Arrangement of data, processes, people, and information technology that interact to collect, process, store, and provide as output the information needed to support an organization
true or false: we transmit data
false, we od not transmit data, data in the repository is not transmitted, it is stored
what are health information systems?
system that captures, stores, manages, or transmits information related to the health of individuals
what is information technology?
combination of computer technology with data and communications technology
define the way we learn about the world, interpret what we see and apply our knowledge to effect change whether through our actions or using technology
models in IT
what are the components of information technology?
hardware
software
telecommunications
networks
databse
people
procedures
what is the most salient component in IT and why is that so?
people because they make the hardware
collective term for computer programs which are sets of instructions to computer hardware
software
what are the general categories of software?
system software
application software
collections of interrelated data shared by many units
contribute to efficiency and productivity
database
true or false: data is stored in electrical language, must be interpreted before transmitted
true
what is data?
raw facts
building blocks of information
formatted for storage, processing and presentation
what is knowledge?
defines relationships among data
what is information?
from processing data
requires applying knowledge to reveal meaning
what are the data interpretation requirements?
database
knowledge base
ontology
rules of inference
what is the database in the interpretation requirements?
collection of data and its associated model
what is the knowledge base in the interpretation requirements?
collection fo rules that can be thought of a database containing elements of knowledge
what is ontology?
set of concepts understood in a knowledge base and how these concepts are arranged meaningfully
what are rules of inference?
specify how a knowledge base can be applied to a database
information systems professionals and users
people
Rules for achieving optimal and secure operations in data processing
procedures
analyze organizational information needs, design and construct information systems, write computer programs, operate hardware, maintain software
people
include priorities in dispensing software applications nad security measures
procedures
what is telecommunications?
communication over distance
communication of bits representing many forms of data and information
combination of devices connected through one of the communications media
networks
what are the types of networks?
LAN (router to computer)
WAN (router to www)
MAN (data to university)
PAN
what are the types of information systems?
operations support systems
management support systems
specialized processing systems
what are the roles of an operation support system?
processing business transactions
controlling industrial processes
supporting enterprise communications and collaborations
updating corporate databases efficiently
what is the role of management support systems?
provides information and support for decision making by all types of managers
what is the role of specialized processing systems?
supports either operations or management applications
what is the systems development life cycle (SDLC)?
phase 1 - planning
phase 2 - analysis
phase 3 - design
phase 4 - implementation
phase 5 - support
what is the logical structure in which records are stored within a database and the method used to establish relationships among the records?
database model
what are the types of database models?
hierarchical model
network model relational model
relational model
object-oriented model
