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Understanding 3-Tier Architecture in Web Development

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This overview explores 3-Tier Architecture in web applications, focusing on the interaction between the client browser, web server, and database server. We delve into how browsers send URL requests for files or programs, how servers execute PHP scripts and SQL commands, and how results are returned to the client. The discussion includes tools like phpMyAdmin for managing MySQL databases, the role of AJAX for asynchronous data fetching, and the use of JavaScript for client-side functionality and animations. This guide is essential for developers seeking to deepen their understanding of modern web technologies.

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Understanding 3-Tier Architecture in Web Development

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Presentation Transcript

  1. 3-Tier Architecture Web server Browser client Browser sends URL requesting file or program Server retrieves file/ runs PHP program server SQL commands php script Server sends results back to browser/client HTML phpMyAdmin Tool CSS MySQL Database PHP Browser displays/renders page SQL MySQL Javascript May include Javascript which runs on client HTTP (developer tools) AJAX

  2. IT 202 Internet Applications 3-Tier Architecture Web server Browser fetch/run server-side script server URL HTTP SQL commands php script Wrapped results SQL PHP phpMyAdmin HTML 5 MySQL Database CSS 2, 3 - displays/renders page MySQL Javascript [API] for client functionality AJAX DEVELOPER TOOLS/CHROME CSS 3 – ANIMATIONS/TRANSITIONS REGEX DATA VALIDATIONS/HTML5 + JS/online tools Integrated TECHNOLOGIES / DEVELOPMENT RESEARCH TALKS

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