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37 Cards in this Set

  • Front
  • Back
Definition of an Information System
-Set of Interrelated Components
-Collect, process, store, and distribute information
-Support Decision Making, coordination, and control.
Data Vs Information
Data: Streams of RAW FACTS

Information: Data shaped into MEANINGFUL form
Managment Levels in an Organization
Level 1: Operational Managment-Production, Service, Data workers

Level 2: Middle Mngmnt: Scientists, Knowledge workers.

Level 3: Senior Mngmnt
IT Infastructure
Consists of physical devices and software apps required to operate the entire enterprise. "service platform"
(human services.)
Business Processes
How work is organized, coordinated, and focused to produce a product or service.
Concrete workflows (materials, information, knowledge)
Unique ways org's coordinate work, information, knowledge
Transaction Processing System

(TPS)
*Elementary/Routine activities* & transactions of the org: ie sales, receipts, cash deposits, payroll, and the flow of materials in a factory.
Management Information Systems

(MIS)
Provides middle mngrs with reports on the org’s current performance. This info (based on TPS) is used to MONITOR and CONTROL the business and PREDICT future performance.
Decision Support Systems

(DSS)
NON-ROUTINE decisions
Issues: Not defined in advance.
Supports Middle mngmnt in solving unique and rapidly changing problems.
Enterprise Applications
-Span functional areas and levels, allows to execute processes across firm
Types of Systems:
-Enterprise (ERP)
-Supply chain mngmnt (SCM)
-CRM
-Knowledge Mngment
TPS
MIS
DSS
ESS
Transaction Processing System
Managment Information Systems
Decision Support Systems
Executive Support System
Chief Information Officer
Overseas the use of Information Technology in the firm. Expected to have a stong buz background and IS expertise. Leadership role in integrating IT into firm's strategy.
IT Governance
(IT Police) Strategy and policies for using IT within an organization. Decision rights, accountability to ensure use of IT supports org's strats' and objectives.
Competitive Forces Model
Traditional Competitors
Suppliers
Customers
New Market Entrants
Substitute products or services
IS Stragies for dealing with Competitive forces
IS for low cost leader
IS for differentiation
IS for market niche
Strenthen Customer and supplier intimacy
Value Chain Model
Highlights specific activities in the business where competitive strategies can best be applied & where information systems are most likely to have a strategic impact.
Value Chain Model:
Primary Activities
Directly related to the production and distribution of firm’s products and services, which create value for the customer. Primary activities include inbound logistics, operations, outbound logistics, sales and marketing, and service.
Value Chain Model:
Support Activities
Delivery of the primary activities possible and consist of organization infrastructure ( administration and management), human resources ( employee recruiting, hiring, and training), technology ( improving products and the production process), and procurement ( purchas-ing input).
Moore's Law
Number of transistors that can be placed on an IC has doubled approximately every two years
Web Services
Program you use through the web.
XML
Extensible Markup Language.
Set of rules to format data for use over the web.
Service Orientated Architecture
(SOA)
set of self contained services that communicate with each other to create a working software application
Problems with Traditional File enviornments
systems tended to grow independently without a company- wide plan.
Data Redundency and inconsistency.
Program Data Dependence.Lack of flexibilty
Poor Security
Lack of data sharing and availability
Database Managment Systems
(DBMS)
Software that permits an organization to centralize data, manage them efficiently, and provide access to the stored data by application programs. The DBMS acts as an interface between application programs and the physical data files.
Relational DBMS
Relational databases represent data as two- dimensional tables ( called relations). Tables may be referred to as files. Each table contains data on an entity and its attributes. Oracle Database, SQL
Web Services
Refer to a set of loosely coupled software components that exchange information with each other using universal Web communication standards and languages.
Key Fields
Primary Key: Unique identifier for all the information in any row of the table and can't be duplicated.
Foreign Key: lookup field to identify records from original table
Data Warehouse
database that stores current and historical data of potential interest to decision makers throughout the company.
Data Marts
subset of a data warehouse in which a summarized or highly focused portion of the organization’s data is placed in a separate database for a specific population of users. (ie marketing)
Business Intelligence (BI)
tools for consolidating, analyzing, and providing access to vast amounts of data to help users make better business decisions are often referred to business intelligence
Data Mining
Finds hinding patterns, relationships in large databases and infers rules to predict future behavior.
TCP/IP
TCP: Transmission Control
IP: Internet

Protocol
Protocol: A set of rules and procedures governing transmission of info between two points.
TCP: movement of data between computers
IP: Responsible for the delivery of packets, includes dissaebmlly and reassembly.
Department of Defense reference model
Application Layer
Transport Layer
Internet Layer
Network Interface Layer
Local Area Networks LANs
Client server, or peer to peer. Ethernet, star bus, ring topology.
Physical Transmission Media
Twisted wire
Coax Cable
Fiber Optic
Wireless, Microw, Sat, Cellular
Bandwidth
Capacity
Internet Network Architecture
Trunklines, regional networks, isps
World Wide Web as an internet Service
email, chatting im, news groups, telnet, FTP, WWW