terms and definition — Week 11

Terms selection - 9

Trojan Horse
The Trojan horse, in computing and software, describes a class of computer threats (malware) that performs undisclosed malicious functions that allow unauthorized access to the host machine, giving them the ability to save their files on the user's computer or even watch the user's screen and control the computer.Trojan Horses (not technically a virus) can be easily and unwittingly downloaded.

Ref: http://en.wikipedia.org/wiki/Trojan_(computer_security)

Worm
A computer worm is a self-replicating computer program. It uses a network to send copies of itself to other nodes (computers on the network) and it may do so without any user intervention. Unlike a virus, it does not need to attach itself to an existing program. Worms almost always cause at least some harm to the network, if only by consuming bandwidth, whereas viruses almost always corrupt or devour files on a targeted computer.

Ref: http://en.wikipedia.org/wiki/Worm_(computer_virus)

PHP
PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. It generally runs on a web server, taking PHP code as its input and creating web pages as output. It can be deployed on most web servers and on almost every operating system and platform free of charge.

Ref: http://en.wikipedia.org/wiki/Php

Resource Description Framework (RDF)
The Resource Description Framework (RDF) is a family of World Wide Web Consortium (W3C) specifications originally designed as a metadata data model. It has come to be used as a general method for conceptual description or modeling of information that is implemented in web resources; using a variety of syntax formats.

Ref: http://en.wikipedia.org/wiki/Resource_Description_Framework

XML schema
An XML schema is a description of a type of XML document, typically expressed in terms of constraints on the structure and content of documents of that type, above and beyond the basic syntactical constraints imposed by XML itself. An XML schema provides a view of the document type at a relatively high level of abstraction.

Ref: http://en.wikipedia.org/wiki/XML_schema

P. S.: Comments on the style, the structure, anything you do not like about the blog are welcomed and thank you!