TAILIEUCHUNG - Lecture Introduction to computing - Lecture 23

This chapter define the terms database and database management system (DBMS), list at least three tasks that a DBMS enables users to do, differentiate between flat-file databases and relational databases, list three steps needed to create a database, explain the purpose of filters and forms, list three examples of query languages. | CSC 101 Introduction to Computing Lecture 23 Dr. Iftikhar Azim Niaz ianiaz@ 1 1 Last Lecture Summary 2 Browser and the WWW URL, Links, Recognizing Links, Home Page Navigating the Web Downloading and Uploading MicroBrowsers History and Help, Ipv4 and IPv6 addresses Tabbed Browsing, Market share Searching the Web Subject Directory Search Engine, How to Use, Search engine Items Search Text Words Length, Site searches Search Techniques Search Operators 2 Last Lecture Summary 3 Types of Websites Portal, News, Information Business / Marketing, Blog, Wiki Online Social, Educational, Entertainment Advocacy, Web Application, Content Aggregator Personal Website Criteria for Evaluating Web site Affiliation, Audience Authority, Content Currency, Design Objectivity 3 Objectives Overview 4 4 WWW and Multimedia Multimedia refers to any application that combines text with: Graphic A graphic is a digital representation of nontext information Graphic formats include BMP, GIF, JPEG, PNG, and TIFF Many Web pages use colorful graphical designs and images to convey messages Graphic Format Used on Web Thumbnail A thumbnail is a small version of a larger graphic graphics —used to improve Web page display time Usually click on thumbnail to display larger graphic Animation Animation is the appearance of motion created by displaying a series of still images in sequence Animation can make Web pages more visually interesting or draw attention to important information or links Audio Audio includes music, speech, or any other sound Compressed to reduce file size You listen to audio on your computer using a player Streaming is the process of transferring data in a continuous and even flow Streaming Audio The process of transferring audio in a continuous and even flow Enables you to listen to music as it downloads to your computer Downloading Music with iTunes Video Video consists of full-motion images that are played back at various speeds MPEG (Moving Picture Experts Group) is a

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