Vce It Applications Unit 3 Outcome 1

IT Applications social unit 3 Outcome 1 edict Notes IT VCE Feb 2013 IT Applications Unit 3 Outcome 1 Revision Notes IT VCE Feb 2013 Table of disciplines Revision2 particle 1 Purpose of a Web land put2 Blogs2 haggle Rooms2 Forums3 Social Net acidifying3 Wikis3 section 2 Web settles and information4 wherefore transcriptions Acquire Data Via Websites4 wherefore Individuals and Organisation summate Data Via Websites4 Techniques for Acquiring Data on Websites4 Techniques for protecting the honorables of individuals and organisations supply information4 CSS/CMS5 Static Websites5 impulsive Websites5 capability Management Systems5 Introduction5 Content earth5 Content Management6 Publishing6 Presentation6 Pros and Cons7 Softw be7 Cascading Styled Sheets (CSS)7 IntroductionError Book bell ringer not defined. Revision Section 1 Purpo se of a Website * To interpret in systema skeletaleation and upstarts (inform)Static Website (no interaction) * To promote an intellection (persuade)Blog To teach ( get)Wiki * To answer questionsForum * To entertain * To provide information and news (inform) * To promote an cr rationalize (persuade) * To teach (educate) * To answer questions * To entertain Blogs * diary entries, commentary, news, pictures and videos * Mainly one way conversation * lead feedback so readers discount feed comment * Most argon schoolbook based * Examples Videoshttp//ryanedit. blogspot. com. au Audiohttp//www. abc. net. au/ go/poadcasting Photoshttp//www. photoblog. com/stuartbarbara * Technorati (http//technorati. com )is a popular search locomotive engine Chat Rooms Online messaging serve * Communication in real succession (synchronous active or occurring at akin time) * M each are commercial * permit communities interact quickly * Textbox, Scrolling Window * To link up need to regis ter, given a substance abusername and cry for security * Avatar is an identity/ surname users assumes to protect their name * Moderator is a just about personate who monitors communication to get a line people f either break rules, they take up power to ban, discipline, warn and educate users. * Rules No abusing No trolling (deliberately endure inflammatory messages to get a reaction) tire outt flood Example http//www. wireclub. com Forums * in any case k nown as message boards * Multi-user thread message application * Posted messages is form of conversation between users * Thread is a continuous conversation/post & replies on a specific topic * hierarchic forums divided into boards ( principal(prenominal) topics) and sub-boards (sub-topics) * Example http//forums. whirlpool. net. au * Have their own netiquette/etiquette/rules No spamming (flooding server with data) Posts mustiness be on-topic (OT) Personal Arguments with individuals should be taken No trolling No abus ing suppose rules Give posts titlesBanned topics not to be utilise Social Networking * Sites tout ensembleow people to exceed with others * Present information about themselves * some(prenominal) are special-interest (e. g. green living, Indian people, genealogy, teenagers) * Others (e. g. Facebook, Twitter) have no specific theme. * Have a profile knave * Problems Stalking formulation Posting Persona Information Posts pass on last forever Employers have looted workers Wikis * Examples Wikipedia, Wikispaces * Online software tools that let a theme of people contribute to the development of a document or knowledge base. * demand some control oer editings proscribe accidental or deliberate injure to the aggregated information. * Wikipedia anonymous edits need to be approved by a moderator. * disputed topics may be locked so only registered user, or specific users stack edit them. Section 2 Websites and Data Why Organisations Acquire Data Via Websites * Cheap * 24 hour customer access * present moment * Efficiency * Effectiveness Increased trueness if visitants enter own data little chance of error passel be processed automatically once entered event data easier to read * Access to spherical market * keister use prompts (* cracking+8) to collect right data tidy sum use controls radio buttons to enforce data integrity * Use validation tools to exploit sure its in right format (DOB dd/mm/yy) * People are put off by having to email, spare or phone Why Individuals and Organisation Supply Data Via Websites * Purchasing of goods and function * Social Networking * Exchanging Information * Immediate results * anonymity * Voting/Polls Techniques for Acquiring Data on Websites * Collating data from entries in a weave form * Providing a web forum * Online chat Techniques for protecting the rights of individuals and organisations supplying data * security protocolsSSL or TLS encryption. violate grade Security(TLS) and its predecessor,Secure S ockets Layer(SSL), provide communicationsecurityover theInternet * File encryption * Logins with usernames and passwords. * using Captcha to deter robotic logins. * Automatic timeout of idle connections. in truth commom in the financial sector * Requiring toughened passwords CSS/CMS Static Websites * Each page is produced by hand, using GUI web editor in chief (e. g. Dreamweaver) or raw HTML recruit * Pages never interpolate without being intensify * Can be dull and unresponsive to current conditions Imagine a motion little eBay site where the finishing time of all auctions had to be entered by hand every(prenominal) second. Dynamic Websites * Constantly changing e. g. eBay * Can respond to events and the profile of the user * Can be achieved to a degree with Javascript (e. g. a countdown timer on a noneffervescent page) Content Management Systems Introduction A bailiwick concern system (CMS) holds the creation, management, distribution, publishing, and stripping of c orporate information. It covers the complete lifecycle of the pages on your site, from providing easy tools to constitute the topic, through to publishing, and closingly to archiving.It withal provides the ability to manage the structure of the site, the aim of the published pages, and the navigation provided to the users. The functionality of a kernel management system can be broken down into several main categories * content creation * content management * Publishing * presentation Content Creation At the front of a content management system is an easy-to-use authoring environment, designed to work like Word. This provides a non-technical way of creating new pages or updating content, without having to know any HTML.The CMS in addition captures you to manage the structure of the site. That is, where the pages go, and how they are linked together. Many even rear simple drag-and-drop restructuring of the site, without breaking any associate. close all content manageme nt systems now provide a web-based authoring environment, which further simplifies implementation, and allows content updating to be done remotely. Content Management Once a page has been created, it is saved into a central alluviation in the CMS. This stores all the content of the site, along with the other supporting details.This central deposition allows a range of useful experiences to be provided by the CMS Keeping track of all the versions of a page, and who changed what and when. Ensuring that each user can only change the section of the site they are responsible for. Integration with existing information sources and IT systems. Publishing Once the final content is in the repository, it can thence be published out to either the website or intranet. Content management systems display powerful publishing engines which allow the display and page layout of the site to be use automatically during publishing.It may also allow the same content to be published to multiple sites. Of course, every site purports different, so the CMS lets the graphic designers and web developers specify the visual aspect that is applied by the system. These publishing capabilities ensure that the pages are consistent across the inbuilt site, and enable a very in high spirits standard of behavior. This also allows the authors to concentrate on writing the content, by leaving the look of the site entirely to the CMS. Presentation The content management system can also provide a number of features to elevate the quality and effectiveness of the site itself.As an example, the CMS leave behind build the site navigation for you, by reading the structure straight out of the content repository. It also makes it easy to support multiple browsers, or users with accessibility issues. The CMS can be used to make your site dynamic and interactive, thereby enhancing the sites impact. * Examples WordPress, Joomla, Drupal Videos to Watch * http//www. youtube. com/ catch? feature=play er_detailpage&v=VdvEdMMtNMY * http//www. youtube. com/watch? feature=player_detailpage&v=jexUS43sdeQ * http//www. youtube. com/watch? feature=player_detailpage&v=VdvEdMMtNMY * http//www. outube. com/watch? feature=player_detailpage&v=RUSAJ_2ZqNI * Database-driven software that creates pages when needed and tailor-makes them for the time, the circumstances, the user * The CMS fetches content (e. g. text, data, pictures) from the database and creates a webpage with pre-defined formatting chosen by the webmaster. * The same pages might look different for each person screening it (e. g. their My eBay pages, or their Facebook pages. ) Pros and Cons Pros * Site maintenance is out-of-the-way(prenominal) easier and quicker * Sites become dynamic and pages change automatically Easier to manage assets (pictures etc) * Better flavor sites * Site has a consistent appearance across all pages * Far less chance of 404 errors or bad links Cons * Must install CMS software onto your webserver so me are pricy * Must strike how to use the CMS * Can be expensive/slow to convert an existing nonoperational site to CMS Software Webmaster creates content (e. g. body text) Media (pix, videos etc) are stored in the database The CMS combines content, media, formatting to create web pages which are sent to the visitors browser Cascading Styled Sheets (CSS) CSS * Instead of repetitively formatting lots of types of text in the same way, define the formatting in a CSS file and just mark text with the style it needs * To change the look of main headings, change the commentary of HEADING1 once in the CSS file. * Dont have to find and change every piece of HEADING1 text across the site * Far quicker, easier * Creates consistently formatted sites * E. g. CSS file contains psyche 1 = Bold, TNR, size 20 * In a webpage, some text is attach as being Heading 1 style. CSS Tutorial * http//www. w3schools. com/css/