Support/Glossaire/en

De DigiWiki.

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Databasing

DBMS

Database Management System, a program or set of programs which manage the creation, maintenance and use of a database.

Query

A query refers to an action taken upon the database, such as a search with a select query.

Schema

The structure of the database, the organisation of data.

Table

A set of data elements in reference to/organised by the schema.

Union

Action taken to join two tables.

Networking

Access Point

The point or gateway for different devices to be able to network, commonly refers to a wireless router.

DHCP

Dynamic Host Configuration Protocol, a protocol used in communicating network settings (such as IP, Gateway and DNS) to end devices.

DNS

Domain Name Service, a service used for translating URLs/URIs into network addresses such as IP addresses.

For example www.google.com translates to 66.102.11.104.

DMZ

Demilitarised zone, a physical or logical subnetwork containing services for a larger untrusted network, i.e. the Internet.

Firewall

A logical service designed for preventing unwanted interactions between hosts or/and networks.

Gateway

A gateway is a system which allows two networks to be able to communicate, commonly through a logical interface.

IP

Internet Protocol, the principle protocol used for communicating/packet transmission across a network.

NAT

Network Address Translation, effectively a networking hack which allows the ability to translate communication between networks by replacing the IP in the header of packets.

Modem

Modulator, demodulator, a device used for modulating analogue signal to encode digital packets onto the signal and visa versa.

Packet Switching

Packet switching is a common form of communication, where data which is sent over a network is broken down into smaller packets of a nominal size.

Private Network

A private network is an instance of a network which uses a range of addresses which can not be accessed outside of the network without the aid of a NAT. This type of setup (private network + NAT) is commonly used for sharing services on a public network (such as the internet) to multiple devices.

Port

A networking port is used to determine the destination of a packet once it reaches its destination. This in turn also enables one computer to use the same networking address for many services.

Port Forwarding

Port forwarding or port mapping is an example of NAT, where the use of a port number determines which address is assigned to a packet.

Router

A device for relaying packets between devices or networks. Also commonly facilitates networking services such as DHCP, firewall control and logging.

Switch

A device mainly for switching/sending packets across on the same network, but level 3 switches are able to exchange packets on different logical networks, providing the medium is the same, such as ethernet VLANs.

VLAN

Virtual Local Network, a group of devices which communicate logically irrelevant of their physical location.

System

CPU

Central Processing Unit, the portion of the computer dedicated to executing processes.

Mono

An opensource international standard framework(headed by Novell) for .Net compliant tools.

.Net

Microsoft .Net Framework, a set of tools to enable Microsoft languages (C#) to provide web services.

OS

Operating System, software which controls the executing and management of applications as well as provides an interface between the user and hardware.

RAM

Random Access Memory, physical memory (integrated chips), used during computer processing to store and access data quickly.

Swap/Paging

The transfer of data from a computers main memory to axillary memory, such as using part of the harddrive instead of RAM.

Virtual Worlds

Aurora-sim

A 3D simulator server which facilitates a framework for virtual world(s).

Kokua

A viewer/client to enable (3D) user interaction with virtual worlds.

Grid

<insert micro def here>!--A set or group of sims which share common services, such as inventory.

Hypergrid

<insert micro def here>

Sim

<insert micro def here>

Radegast Viewer

A text based viewer to enable user interaction with virtual worlds.