INSY 2303 Exam 3 UTA (Answered)
Information System
Collects, stores, and processes data to provide useful, accurate, and timely information
Organization
a group of people working together to accomplish a goal
Enterprise
Any organization that seeks profit by providing goods and services
5 c...
INSY 2303 Exam 3 UTA (Answered)
Information System
Collects, stores, and processes data to provide useful, accurate, and timely information
Organization
a group of people working together to accomplish a goal
Enterprise
Any organization that seeks profit by providing goods and services
5 components of an information system
Hardware, software, communication networks, policies and procedures, people
Vertical Market
software designed for a specific industry or enterprise
Horizontal market
Software designed for common elements of many businesses
3 phases of decision making
1. Recognize the problem or a need to make a decision
2. Devise and analyze possible solutions
3. Select an action or solution
Transaction
an exchange between two parties that is recorded and stored in a computer system
Transaction processing system (TPS)
provides a way to collect, process, store, display, modify, or cancel transactions
Online processing
a real-time method in which each transaction is processed as it is entered
Management information system
any computer system that processes data and provides information within a business
setting
Summary report
combines, groups, or totals data
Exception report
contains information that is outside of normal or acceptable ranges
Decision support system
helps people make decisions by directly manipulating data, accessing data from
external sources, generating statistical projections, and creating data models of various
scenarios
Executive information system
a type of decision support system designed to provide senior managers with information
relevant to strategic management activities
Expert system
a computer system designed to analyze data and produce a recommendation,
diagnosis, or decision based on a set of facts and rules
Knowledge engineering
the process of designing, entering, and testing the rules in an expert system
Ecommerce
, business transactions that are conducted electronically over a computer network
B2C
Online storefronts such as Amazon that offer merchandise and services to consumers
C2C
Consumers sell to each other at popular auction and list sites, such as eBay
B2B and B2G
Websites such as FedBid that sell goods and services to other businesses or to the
government
Supply chain
the sequence of organizations, people, activities, information, and resources involved in
moving a product or service from supplier to customer
Enterprise resource planning (ERP)
suite of software modules that integrate major business activities
ERP Benefits
1. improved overall performance
2. Minimized technology overhead
3. Increased efficiency and productivity from streamlined workflows
4. Improved access to information from a single database
System development life cycle
an information system progresses through several phases as it is developed, used, and
retired
Planning phase
1. assembling the project team
2. justifying the project
3. choosing a development methodology
4. developing a project schedule
5. producing a project development plan
Product development plan
1. short description of the project
2. estimate of the project costs and financial benefits
3. list of project team
4. schedule for the project
PIECES framework
helps classify problems in an information system
project management software
effective tool for planning and scheduling
Analysis phase
produces a list of requirements for a new or revised information system
Tasks for the analysis phase
1. studying the current system
2. determining system requirements
3. writing a report
system requirements
criteria for successfully solving problems
Data flow diagram
graphically illustrates how data moves through an information system
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