Vce It Applications Unit 3 Outcome 1

IT Applications social unit 3 Outcome 1 Revision Notes IT VCE Feb 2013 IT Applications Unit 3 Outcome 1 Revision Notes IT VCE Feb 2013 Table of capacitances Revision2 sectionalisation 1 Purpose of a Web place2 Blogs2 Chat retinue2 Forums3 friendly Networking3 Wikis3 role 2 Web spots and selective information4 Why Organisations Acquire entropy Via Websites4Why Individuals and Organisation Supply Data Via Websites4 Techniques for getting Data on Websites4 Techniques for protecting the rights of individuals and organisations supplying data4 CSS/CMS5 Static Websites5 Dynamic Websites5 Content Management Systems5 Introduction5 Content Creation5 Content Management6 Publishing6 Presentation6 Pros and Cons7 Softw ar7 Cascading Styled Sheets (CSS)7 IntroductionError Bookmark not defined. Revision Section 1 Purpose of a Website * To deliver the goods information and tidings (inform)Static Website (no interaction) * To gain an opinion (persuade)Blog To teach (educate)Wiki * To answer questionsForum * To entertain * To provide information and news (inform) * To promote an opinion (persuade) * To teach (educate) * To answer questions * To entertain Blogs * Diary entries, commentary, news, pictures and videos * gener eithery one way communication * Have feedback so readers potful give comment * Most are text based * manakins Videoshttp//ryanedit. blogspot. com. au Audiohttp//www. abc. net. au/services/poadcasting Photoshttp//www. photoblog. com/stuartbarbara * Technorati (http//technorati. com )is a popular search engine Chat Rooms Online messaging services * Communication in real clock time (synchronous be or occurring at same time) * M whatsoever are commercial * permit communities interact quickly * Textbox, Scrolling Window * To join need to register, given a spendr consult and password for trade protectio n * Avatar is an identity/nickname users assumes to protect their name * Moderator is a person who monitors communication to ensure people follow rules, they comport power to ban, discipline, warn and educate users. * Rules No abusing No trolling (deliberately brandmark inflammatory messages to get a reaction) Dont flood Ex axerophtholle http//www. wireclub. com Forums * Also known as message boards * Multi-user threaded message lotion * Posted messages is form of conversation between users * Thread is a day-and-night conversation/post & replies on a ad hoc issuing * Hierarchical forums divided into boards ( important 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 must be on-topic (OT) Personal Arguments with individuals should be taken No trolling No abusing Read rules Give posts titlesBanned topics not to be use Social Networking * Sites allow people to communicate with others * Present information about themselves * Some are special-interest (e. g. green living, Indian people, genealogy, teenagers) * Others (e. g. Facebook, Twitter) turn out no specific theme. * Have a profile varlet * Problems Stalking Grooming post-horse Persona Information Posts will last forever Employers have pillaged workers Wikis * Examples Wikipedia, Wikispaces * Online software tools that let a group of people contribute to the exploitation of a document or knowledge base. * Needs some take for over editings Pr raset accidental or deliberate damage to the aggregated information. * Wikipedia anonymous edits need to be approved by a moderator. * moot topics may be locked so only registered user, or specific users can edit them. Section 2 Websites and Data Why Organisations Acquire Data Via Websites * Cheap * 24 hour customer access * Instant * capacity * Effectiveness Increased accuracy if visitors enter own data slight chance of error preem pt be processed automatically at once entered Type data easier to read * Access to global market * Can use prompts (* shift+8) to collect right data Can use controls radio buttons to enforce data integrity * Use validation tools to knead sure its in right format (DOB dd/mm/yy) * plenty are put off by having to email, write or telecommunicate Why Individuals and Organisation Supply Data Via Websites * Purchasing of goods and Services * Social Networking * Exchanging Information * Immediate results * Anonymity * Voting/Polls Techniques for Acquiring Data on Websites * Collating data from entries in a nett form * Providing a web forum * Online chat Techniques for protecting the rights of individuals and organisations supplying data * security protocolsSSL or TLS encryption. Transport Layer Security(TLS) and its predecessor,Secure Sockets Layer(SSL), provide communicationsecurityover theInternet * File encryption * Logins with usernames and passwords. * development Captcha to de ter robotic logins. * Automatic timeout of idle connections. Very commom in the financial celestial sphere * Requiring strong passwords CSS/CMS Static Websites * Each page is produced by hand, using graphical user interface web editor (e. g. Dreamweaver) or raw HTML code * Pages never change without creation edited * Can be dull and refractory to current conditions Imagine a unchanging eBay site where the finishing time of all auctions had to be entered by hand every second. Dynamic Websites * invariably 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 static page) Content Management Systems Introduction A bailiwick management establishment (CMS) supports the creation, management, distribution, publishing, and discovery of corporate information. It covers the complete lifecycle of the pages on your site, from providing simple tools to create the substance, through to publishi ng, and finally to archiving.It also provides the ability to manage the structure of the site, the appearance of the promulgated pages, and the navigation provided to the users. The functionality of a subject management system of rules can be broken down into several main categories * content creation * content management * Publishing * presentation Content Creation At the former of a content management system is an tardily-to-use authoring environment, designed to work desire Word. This provides a non-technical way of creating new pages or update content, without having to know any HTML.The CMS also allows you to manage the structure of the site. That is, where the pages go, and how they are linked together. Many even offer simple drag-and-drop restructuring of the site, without breaking any links. Almost all content management systems now provide a web-based authoring environment, which further simplifies implementation, and allows content updating to be done remotely. Conten t Management at once a page has been created, it is saved into a central repository in the CMS. This stores all the content of the site, along with the other supporting details.This central repository allows a reaching of useful gasconades 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 brisk information sources and IT systems. Publishing Once the final content is in the repository, it can then be produce out to either the website or intranet. Content management systems boast mightily publishing engines which allow the appearance and page layout of the site to be utilize automatically during publishing.It may also allow the same content to be published to multiple sites. Of course, every site looks contrary, so the CMS lets the graphic designers and web developers specify the appearance that is applied by the system. These publishing capabilities ensure that the pages are consistent across the entire site, and enable a very high standard of appearance. This also allows the authors to concentrate on writing the content, by go away the look of the site entirely to the CMS. Presentation The content management system can also provide a number of features to enhance the quality and effectiveness of the site itself.As an example, the CMS will 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 employ to make your site dynamic and interactive, thereby enhancing the sites impact. * Examples WordPress, Joomla, Drupal Videos to discoverer * http//www. youtube. com/watch? feature=player_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 viewing it (e. g. their My eBay pages, or their Facebook pages. ) Pros and Cons Pros * Site maintenance is off the beaten track(predicate) easier and quicker * Sites become dynamic and pages change automatically Easier to manage assets (pictures etc) * reveal looking 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 some are expensive * Must consume how to use the CMS * Can be expensive/slow to convert an existing static 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 fairish mark text with the style it needs * To change the look of main headings, change the definition 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 Heading 1 = Bold, TNR, size 20 * In a webpage, some text is tagged as being Heading 1 style. CSS Tutorial * http//www. w3schools. com/css/