1. Introduction to Information Systems SSD1: Introduction to Information Systems Unit 1. The World Wide Web Unit 2. Introduction to Java and Object- Oriented Programming Unit 3. Inheritance Introduction to Information Systems SSD1 – Introduction to Information Systems

2. Introduction to Information Systems TEXTBOOK The course also assigns readings from a textbook: Introduction to Programming Using Java: An Object-Oriented Approach, 2/E 2nd Edition David Arnow, Scott Dexter, Gerald Weiss Publisher: Addison-Wesley Copyright: 2004 ISBN: 0-321-20006-3 Format: Paper, 736 pages. Introduction to Programming Using Java: An Object-Oriented Approach, 2/E Appendix E. Readings

3. Introduction to Information Systems SSD1 Hardware/Software Requirements Internet connection iCarnegie-supported Web browser A text editor Sun's Java 2 Platform, Standard Edition (J2SE) 1.4 or later (Appendix A. Java 2 Platform, Standard Edition (J2SE)) iCarnegie-supported MS Windows platform iCarnegie Servlet Workbench ( Appendix B. The iCarnegie Servlet Workbench ) WinZip application

4. Introduction to Information Systems The purpose of SSD1 is to Learn foundational Internet skills and concepts Learn foundational programming skills and concepts Prepare for future Java courses by learning simple Java syntax and structure Prepare for future programming courses by learning solid programming practices and strategies

5. Introduction to Information Systems Students successfully completing SSD1 will be able to Produce –Basic HTML pages –Servlets that respond to user requests from browser –User interfaces with HTML FORM elements Use –The World Wide Web to find information –Effective Web searching techniques –A simple text editor to build and modify HTML code –JDK tools for compiling and debugging servlets

6. Introduction to Information Systems The World Wide Web Unit 1. 1.1 Using the Web 1.2 What's in the Web? 1.3 Introduction to HTML Forms and Servlets

7. Introduction to Information Systems Using the Web 1.1.1 Surfing the Web 1.1.2 Your Web Pages 1.1.3 Clients, Servers, and URLs 1.1.4 Searching the Web 1.1.5 Commerce on the Web 1.1.6 Some Ethical Considerations

8. Introduction to Information Systems Internet and World Wide Web Internet – Computer Network that connects millions of computers across countries Originally conceived of by Advanced Research Project Agency (ARPA) of the U.S. government in the 1960s World Wide Web – Facilitates communication over the Internet using computer network protocol called HTTP

9. Introduction to Information Systems Surfing the Web Webpage, Website, Webplace refer to the locations on the web that can be visited through a web browser Two major areas of control on the web: naming of websites and rules of Internet Service Providers (ISP) No organisation responsible for the content on the web

10. Introduction to Information Systems Other notes on the Web Web security is one of the major areas of concern for web transactions and personal information hosted on the web Web facilitates multiple interest groups who are not co-located Web is used as a communication medium for people distributed geographically World Wide Web – Facilitates communication over the Internet using computer network protocol called HTTP

11. Introduction to Information Systems Your Web Pages “Reasonable Person Principle” – when hosting a website, pages should be maintained for other to view Information on the web pages should be correct and changes should be updated Presenting email information on the web pages implies being responsive to surfer’s emails Displaying personal information on the web pages is not a good idea

12. Introduction to Information Systems Clients, Servers and URLs Client – an application that requests information from a server application (web browser) Server – an application that run on powerful computers to service concurrent requests from a number of clients

13. Introduction to Information Systems Clients, Servers and URLs (2) Uniform Resource Locator (URL) – a naming scheme to specify an address of a web resource URL includes three elements: –“Communication protocol://” (commonly HTTP) –Host machine –Exact path of the resource Eg. http://www.icarnegie.com/cources.html

14. Introduction to Information Systems Client-Server Model

15. Introduction to Information Systems Browsing vs. Searching Browsing – Unfocused random passing from link to link around the web Searching – Using a search engine to locate a resource on the web. Searching may eventually run into browsing Search engine – A program that implements different search mechanisms “Hits” from the search are displayed in order of decreasing relevance

16. Introduction to Information Systems Types of Search Sites Search engine featured –Sites that maintain indexes/databases of all pages and documents on the web –These indexes/databases maintained regularly using “spiders” for addresses of new documents that become available on the web Web directory featured –Information organised into categories and subcategories, mostly based on human effort –Only a fraction of net in web directories, and owners are responsible for the inclusion of their sites

17. Introduction to Information Systems Forms of Web Commerce Internet Service Providers –Sell access to the internet in terms of log on service, email service, web publishing and the like –Establishing and maintaining web presence done through ISPs Advertising –A way for search engine companies to make money by displaying “visual clutter” –Ads displayed based on what is being searched for Commercial Transactions –Many commercial sites (www.amazon.com)

18. Introduction to Information Systems Some Ethical Considerations Can you go to your favorite sports team's Web page, make a copy of the.jpeg or.gif file that is their logo and put that logo on your Web page? Can you put a link on your page to the home page of your favorite sports team?