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Bus 391
Information Systems
51
Business
Undergraduate 3
10/23/2012

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Cards

Term
Management information systems
Definition
a business function that plans for, develops, implements, IT hardware, software, and the portfolio of applications that people use to support the foals of an organization
Term
Business Success thru IT
Definition
Customer service, finance, sales and marketing, IT ops, operations management, HR, Security
Term
Roles of IT:
Definition
Reduce Costs/Improve productivity, Improve customer satisfaction/loyalty, create competitive advantage, streamline supply chain, global expansion
Term
The Five Forces Model (porter)
Definition
threats of new entrants, bargaining power of suppliers, bargaining power of buyers, threat of substitute products or services, these are all Rivalry among competitors
Term
The three generic strategies
Definition
1. cost leadership
2. differentiation
3. focused strategy
Term
Value Chains
Definition
Include pimary activities that directly relate to the businesses profits which is raw materials and the process through manufacturing and selling.

Secondary value activities are like HR, IT department, Firm infrastructure
Term
IT infrastructure
Definition
includes hardware, software, and telecommunications
Term
Central Processing unit CPU
Definition
the actual hardware that interprets and executes the program (software) instructions and coordinates how all the other hardware devices work together
Term
Control Unit
Definition
interprets software instructions and literally tells the other hardware devices what to do, based on the software instructions
Term
Primary Storage
Definition
the computers main memory, which consists of the RAM, cache , and the read-only memory (ROM)
Term
Random Access Memory (RAM)
Definition
the computers primary working memory, in which program instructions and data are stored so that they can be accessed directly by the CPU via the processors high-speed external data bus
Term
Secondary Storage
Definition
consists of equipment designed to store large volumes of data for long-term storage
Term
Magnetic Medium
Definition
a secondary storage medium that uses magnetic techniques to store and retrieve data on disks or tapes coated with magnetically sensitive materials
Term
magnetic tape
Definition
an older secondary storage medium that uses a strip of this plastic costed with a magnetically sensitive recording medium
Term
Hard Drive
Definition
a secondary storage medium that uses several rigid disks coated with a magnetically sensitive material and housed together with the recording heads in a hermetically sealed mechanism
Term
Optical Medium
Definition
CD ROM
CR RW
DVD
DVD ROM
DVD RW
Term
Client Server network
Definition
a network in which one or more computers are servers and provide service to the other computers which are called clients
Term
Input Device
Definition
equipment used to capture information and commands

ex. keyboard, mouse, joystick
Term
output devices
Definition
equipment use to see, hear, or otherwise accept the results of informations processing requests

ex. printers, LCD
Term
Communication Device
Definition
equipment used to send information and receive it from on location to another

ex. cables, wireless, satellite
Term
System Software
Definition
controls how the various technology tools work together along with the application software.

ex. utility software which is like disk image, spyware, uninstaller
Term
Communication protocols
Definition
a set of rules that ever computer follows to transfer information
Term
High-Quality Information
Definition
Accuracy, Completeness, consistency, uniqueness, timeliness
Term
Low-Quality information
Definition
missing information, inaccurate information, duplicates

sources: online users, different ways of entering data, call centers use abbreviations

Business effects: cant track customers, can identify customers,
Term
Data Base Management System
Definition
software that allows users and applications to interact with a database
Term
Entity
Definition
a person, place, thing, transaction, or event, about which information is stored
Term
Entity Class (Table)
Definition
a collection of similar entities
Term
Attributes
Definition
characteristics or properties of an entity class

the columns or rows
Term
Primary Key
Definition
a field that uniquely identifies a given entity in a table
Term
Foreign Key
Definition
a primary key of one table that appears an attribute in another table and acts to provide a logical relationship among the two tables
Term
Relational Database Advantages
Definition
increased flexibility, scalability and performance, reduces redundancy, and provides a higher quality of information
Term
Telecommunication system
Definition
enable the transmission of data over public or private networks
Term
Network
Definition
a communications, data exchange, and resource-sharing system created by linking two or more computers and establishing standards, or protocols, so that they can work together

-Local Area Network LAN
-Metro Area Network MAN
-Wide Area Network WAN
Term
Protocol
Definition
a standard that specifies the format of data as well as the rules to be followed during transmission
Term
Wireless Fidelity wi-fi
Definition
a means of linking computers using infrared or radio signals
Term
Bluetooth
Definition
an omnidirectional wireless technology that produces limited-rang voice and data transmission over the unlicensed 2.4-GHz frequency band, allowing connection with a wide variety of fixed and portable devices that normally would have to be cabled together
Term
Radio Frequency Identification RFID
Definition
use active or passive tags in the form of chips or smart labels that can store unique identifiers and relate this information to electronic readers
Term
Business Process
Definition
a standardized set of activities that accomplishes a specific task, such as processing a customers order
Term
Customer Facing Process
Definition
results in a product or service that is received by an organizations external customer
Term
Business facing process
Definition
invisible to the external customer but essential to the effective management of the business
Term
Continuous Process Improvement model
Definition
attempts to understanding measure the current process, and make performance improvements accordingly
Term
Business process reengineering BPR
Definition
Analysis and redesign of workflow within and between enterprises
Term
Data Warehouse
Definition
logical collection of information gathered from many different operational databases that supports business analysis activities and decision making tasks
Term
ectraction, transformation, and loading (ETL)
Definition
a pricless that extracts information from internal and external databases, transforms the information using a common set of enterprise definitions, and loads the informatin into a data warehouse
Term
data mart
Definition
contains a subset of data warehouse information
Term
Dimension
Definition
a particular attribute of information
Term
Cube
Definition
common term for the representation of multidimensional information
Term
data mining
Definition
the process of analyzing data to extract information not offered by the raw data alone

three tyoes:
-cluster analysis
-associations detection
-statistical analysis
Term
data mining tools
Definition
use a variety of techniques to find patterns and relationships in large volumes of information and infer rules from them that predict future behavior and guide decision making
Term
Systems Development Life Cycle
Definition
a structured step by step approach for developing information systems

7Phases:
- Plan
- Analysis
- Design
- Develop
- Test
- Implement
- Maintain
Term
Data Flow Diagrams
Definition
seek to represent what information is involved, where it comes from, what process it plays a role in, where it is stored., and who receives the output
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