Overview Web Session 3 Matakuliah: Web Database Tahun: 2008

2 Last Session Review:Overview Database and DBMSAdvantages of DBMSDisadvantages of DBMSOverview Relational Database Overview SQL Data Definition Language Data Manipulation Language

3 Agenda:Web Basic ConceptHow to put information on WebDynamic Web pagesNew Development of Web

4 Objectives: Student understands about Web Basic Concept, Dynamic Web pages and New Development of Web Student can put information on Web

5 Web Basic Concept What is a Web? – An Internet application that allows a wide range of information and services to be stored and accessed on the Internet. – Web use Internet to: Storing information Finding and retrieving information Storing and executing computer programs Inputting and manipulating information In almost any part of the world, by almost anyone, using low cost computer system and communication resources – Information that can be represented in Web are largely restricted only by the imagination and skill of the web application designers and implementers. – Information can be represented as text, numbers, images, graphics, sound or video

6 Web Basic Concept (cont.) Web is highly dependent with Internet Internet has standard communications protocols to interconnect computer network all over the world: TCP/IP (Transmission Control Protocol/Internet Protocol) TCP/IP define the rules and mechanisms by which co-operating computers can share resources across a network TCP/IP Protocol Stack: – Application Layer – Transport Layer – Internet Layer – Network Interface Layer TCP/IP protocols identify each host by a unique address called IP Address

7 Web Basic Concept (cont.) Other related Web Basic Concept: – Web Servers and Web Browser – Search Engine – Universal Resources Locator (URL) – HTTP

8 How to put information on Web Information and services stored in Web Server or other system that is connected by Web Server Web Server: a process running in a host computer waiting for HTTP request to come in Web Server configuration: – NCSA – Apache Server – IIS Represent Information on Web: Web Document, usually use HTML Link between web document to other web document: hyperlink

9 Dynamic Web Page What is Dynamic Web Page? – Web page that has dynamic content, the resources is not static and can be the output of the programs, or scripts, run on the server. Why Dynamic Web Page? – Make Web more interactive and up-to-date What Technology to make Dynamic Web Page? – Server Side Programs  CGI (Common Gateway Interface) – Client Side Programs  JavaScript

10 New Development of Web DOM Cascading Style Sheets XML Web 2.0 AJAX etc

11 Summary Web can not be separated from Internet, those two are highly connected We can publish simple web site by adding static Web Document in Web Server Dynamic Web Page is more interactive than Static Web Page Web Technology are still improving and new technology will continue to develop

12 Next Session:Conventional Database Design Method Requirements AnalysisData AnalysisData DesignPhysical Database Design

13 End of Overview Web Thank you