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The IP provides support for routing and addressing (via an unique IP address for machines on the Internet) while TCP supports multiplexing via 64K ports from port number 0 to 65535. HTTP is an application layer protocol runs over TCP/IP.The process repeats for the next request.The client-side program displays the query result on the browser.The server-side program receives the query parameters, queries the database based on these parameters, and returns the query result to the client-side program.The client-side program sends the query parameters to a server-side program.The user fills up the query criteria inside the form and submits the form.The HTTP server returns an HTML form (client-side program), which is loaded into the client’s browser.A user, via a web browser (HTTP client), issues a URL request to an HTTP server to start a webapp.Server-Side Programs: could be written in Java Servlet/JSP, ASP, PHP, Perl, Python, CGI, and others.Client-Side Programs: could be written in HTML Form, JavaScript, VBScript, Flash, and others.Database: E.g., Open-source MySQL, Apache Derby, mSQL, SQLite, PostgreSQL, OpenOffice’s Base Commercial Oracle, IBM DB2, SAP SyBase, MS SQL Server, MS Access and others.HTTP Client (or Web Browser): E.g., Internet Explorer (MSIE), FireFox, Chrome, Safari, and others. ![]()
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