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55 Cards in this Set

  • Front
  • Back
Adv of Traditional Approach
Easy to use
Disadv of Traditional Approach
Results in data redundancy, which lowers integrity of data, which is less accurate
Adv of Database Approach
Improved stategic use of corporate data, reduced data redundancy, improved integrity, easier modification and upgrading, data and program independence, better access to data and information, standardization of data access, a framework for program development, better overall protection of data, and shared data and information resources
Disadv of Database Approach
More complexity, more expensive, and more difficult to recover from a failure.
Enterprise Data Modeling
a diagram of data entities and their relationships
Database Management System (DBMS)
A group of programs used as an interface between a database and application programs or a database and user
Entity
a generalized class of people, places, or things (objects) for which data is collected, stored, and maintained
Attribute
a characteristic of an entity
Primary key
a field or set of fields that uniquely identifies the record
Data warehouse
a database that collects business information from many sources in the enterprise, covering all aspects of the company’s processes, products, and customers
Hierarchy of data
bits, characters, fields, records, files, and databases
Data mart
a subset of a data warehouse
Data mining
an information-analysis tool that involves the automated discovery of patterns and relationships in a data warehouse
Business Intelligence
the process of gathering enough of the right information in a timely manner and usable form and analyzing it to have a positive impact on business strategy, tactics, or operations
Knowledge Management
the process of capturing a company’s collective expertise wherever it resides and distributing it wherever it can help produce the biggest payoff
Distributed database
A database in which the data may be spread across several smaller databases connected via telecommunications devices
Online Analytical Processing (OLAP)
Software that allows users to explore data from a number of different perspectives
Online Transaction Processing (OLTP)
refers to a class of systems that facilitate and manage transaction-oriented applications, typically for data entry and retrieval transaction processing.
Telecommunications
electronic transmission of signals for communications, via telephone, radio, television, etc.
Data communications
subset of telecommunications that refers to the electronic collection, processing, and distribution of data, typically between computer system hardware devices
Telecommunications medium
anything that carries an electronic signal and interfaces between a sending device and a receiving device
Computer network
the communications media, devices, and software needed to connect two or more computer systems and/or devices
Synchronous communications
the receiver gets the message instantaneously
Asynchronous communications
the receiver gets the message some period of time after it is sent
Half-duplex channel
can transmit data in either direction, but not simultaneously
Full-duplex channel
permits data transmission in both directions at the same time
Simplex channel
can transmit data in only one direction
Guided transmission media
communications signals are guided along a solid medium
Unguided transmission media
communications signals are sent over airwaves
Examples of Guided media
Coaxial cables, fiber optic cable
Examples of Unguided media
Microwave, cellular, infrared
Modem
a device that translates data from digital to analog and analog to digital
Analog signal/digital signal
Phones can only transmit through analog signals while the internet useds digital signals, so you need a modem
Multiplexers
devices that allow several telecommunications signals to be transmitted over a single communications medium at the same time
Front-end processors
special-purpose computers that manage communications to and from a computer system
Connect a midrange or mainframe computer to hundreds or thousands of communications lines
Communication protocol
TCP/IP, OSI, IEEE 802.3 (Ethernet), Firewire
Network Topology
logical model that describes how networks are structured or configured
Electronic Data Interchange (EDI)
a set of standards for structuring information that is to be electronically exchanged between and within businesses, organizations, government entities and other groups.
Network-management software
enables a manager on a networked desktop to monitor the use of individual computers and shared hardware, scan for viruses, and ensure compliance with software licenses
Network operating system (NOS)
systems software that controls the computer systems and devices on a network and allows them to communicate with each other
Internet
a collection of interconnected networks, all freely exchanging information
Extranet
a network based on Web technologies that links selected resources of a company’s intranet with its customers, suppliers, or other business partners
Uniform Resource Locator (URL)
an assigned address on the Internet for each computer
Internet service provider (ISP)
any company that provides individuals or organizations with Internet access
Hypertext Markup Language (HTML)
the standard page description language for Web pages
Web browser
software that creates a unique, hypermedia-based menu on a computer screen, providing a graphical interface to the Web
Management issues of the internet
preventing attacks
Service and speed issues
Web server computers can be overwhelmed by the amount of “hits” (requests for pages)
Routers can become bottlenecks
Privacy issues
cookies and spyware
Fraud issues
Phising
Cryptography
converting a message into a secret code and changing the encoded message back to regular text
Digital signature
encryption technique used to verify the identity of a message sender for processing online financial transactions
Firewall
a device that sits between an internal network and the Internet, limiting access into and out of a network based on access policies
Push technology
When companies show you stuff
What do you need to connect to the internet?
1. Computer
2. NIC
3. NOS
4. ISP
5. Protocol
6. Internet browser
Steps to make a website?
1. Plan the site
2. Decide the type of hosting and domain names
3. Decide and build the site
4. Promote the site
5. Monetize
6. Monitor and Maintain the site