Authentication server (498)
A server that keeps track of who's logging on to the network and which services on the network are available to each user.
Bandwidth (250)
The maximum speed at which data can be transmitted between two nodes on a network; usually measured in megabits per second (Mbps). See also data transfer rate.
Batch processing
The accumulation of transaction data until a certain point is reached, at which time several transactions are processed at once.
Biometric authentication
A device that uses some unique characteristic of human biology to identify authorized users.
Bridge (496)
A device that is used to send data between different collision domains in a network, depending on where the recipient device is located.
Broadband (261)
A high-speed Internet connection such as cable, satellite, or digital subscriber line (DSL).
Clickstream data
Software used on company websites to capture information about each click that users make as they navigate through the site.
Client/server network (474)
A type of network that uses servers to deliver services to computers that are requesting them (clients).
Data centralization
When data is maintained in only one file.
Data dictionary
A map of a database that defines the features of the fields in the database.
Data integrity (page 430)
When the data in a database is accurate and reliable.
Data redundancy(page 428 - refer to figure 11.3 and page 429)
Duplicated data in a list.
Data warehouse (449)
A large-scale collection of data that contains and organizes in one place all the data from an organization's multiple databases.
Database (426)
A digital collection of related data that can be stored, sorted, organized, and queried.
Database administrator
An information technology professional responsible for designing, constructing, and maintaining databases
Application server (use keyterms on page 508)
A server that acts as a repository for application software.
Database server
A server that provides client computers with access to information stored in databases.
Cloud server
A server that is maintained by a hosting company and that is connected to networks via the Internet.
Decision support system (DSS) (459)
A type of business intelligence system designed to help managers develop solutions for specific problems.
Digital subscriber line (DSL)
A type of connection that uses telephone lines to connect to the Internet and that allows both phone and data transmissions to share the same line.
Electronic data Interchange (EDI)
The exchange of large amounts of data in a standardized electronic format.
Enterprise resource plan (ERP) (461)
A business intelligence system that accumulates in a central location all information relevant to running a business and makes it readily available to whoever needs it to make decisions.
Ethernet network
A network that uses the Ethernet protocol as the means (or standard) by which the nodes on the network communicate.
Ethernet protocol (254-255)
...
Exception report (458)
A report generated by a management information system that shows conditions that are unusual or that need attention by system users.
Fiber-optic cable (490)
A cable that transmits data at close to the speed of light along glass or plastic fibers.
Field (434)
The component of a database in which the database stores each category of information.
Information system
A system that includes data, people, procedures, hardware, and software that help in planning and decision making; a software-based solution used to gather and analyze information.
MAC address (495)
The physical address, similar to a serial number, of each network adapter.
Management information system (MIS)
(Provide timely and accurate info)
A type of business intelligence system that provides timely and accurate information that enables managers to make critical business decisions.
Modem
A device that connects a network to the Internet.
Natural language process (NLP) (460)
A knowledge-based business intelligence system that enables users to communicate with computer systems using a natural spoken or written language instead of a computer programming language.
Network
A group of two or more computers (or nodes) that are configured to share information and resources such as printers, files, and databases.
Network Adapter
A device that enables the computer (or peripheral) to communicate with the network using a common data communication language, or protocol.
Network Administration
Involves tasks such as (1) installing new computers and devices, (2) monitoring the network to ensure it's performing efficiently, (3) updating and installing new software on the network, and (4) configuring, or setting up, proper security for a network.
Network architectures and classification
The design of a computer network; includes both physical and logical design.
Network topologies
Ring (482-483)
Star (484)
The physical or logical arrangement of computers, transmission media (cable), and other network components.
ring (loop) topology
A type of network topology where computers and peripherals are laid out in a configuration resembling a circle.
star topology
Network Types (475)
Know which is WAN, LAN, HAN, PAN and MAN.
wide area network (WAN)-
A network made up of local area networks (LANs) connected over long distances.
home area network (HAN)-
A network located in a home that's used to connect all of its digital devices.
local area network (LAN)-
A network in which th
Network protocol (517)
set of rules for exchanging electronic information
NIC
network interface card (NIC)
An expansion card that enables a computer to connect other computers or to a cable modem to facilitate a high-speed Internet connection.
Node
A device connected to a network such as a computer, a peripheral (such as a printer), or a communications device (such as a modem).
Network operating system (NOS) (497)
software that handles requests from information, internet access, and the use of peripherals for the rest of the network node, provides the services necessary for the computer on the network to communicate
Office support system (OSS)
Assists employees in day-to-day tasks
...
Packet
A small segment of data that's bundled for sending over transmission media. Each packet contains the address of the computer or peripheral device to which it's being sent.
Peer-to-peer
A network in which each node connected to the network can communicate directly with every other node on the network.
Piggybacking
The process of connecting to a wireless network without the permission of the owner of the network.
Primary Key
In a database, a field that has a value unique to a record.
Query
In a database, a way of retrieving information that defines a particular subset of data; can be used to extract data from one or more tables.
Real-time processing
The processing of database transactions in which the database is updated while the transaction is taking place.
Record
A group of related fields in a database.
relationship
In a relational database, a link between tables that defines how the data is related.
router
A device that routes packets of data between two or more networks.
switch
A device for transmitting data on a network. A switch makes decisions, based on the media access control address of the data, as to where the data is to be sent.
table
A group of related records in a database.
throughput
The actual speed of data transfer that's achieved. It's usually less than the data transfer rate and is measured in megabits per second (Mbps).
token
A special data packet used to pass data in a ring topology network.
Transaction-processing system (TPS)
A type of business intelligence system for keeping track of everyday business activities.
Twisted-pair Cable
Cables made of copper wires that are twisted around each other and are surrounded by a plastic jacket (such as traditional home phone wire).
VPN
A network that uses the public Internet communications infrastructure to build a secure, private network among various locations.
Web server
A computer running a specialized operating system that enables it to host web pages (and other information) and to provide requested web pages to clients.