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Web-based Software Development - An introduction

Web-based Software Development - An introduction. The Client/Server Model.  Process to process communication (PPC) The underlying platform of the client/server programming. The Client/Server Model.  Two Tier (Traditional) Client/Server Model.

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Web-based Software Development - An introduction

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  1. Web-based Software Development- An introduction

  2. The Client/Server Model  Process to process communication (PPC) • The underlying platform of the client/server programming. Web-based Software Development

  3. The Client/Server Model  Two Tier (Traditional) Client/Server Model Exercise: Name a commonly used client/server technique. • Sockets programming Web-based Software Development

  4. The Client/Server Model  Three Tier Client/Database/Server Model ? ? APIs: JDBC ADO Web-based Software Development

  5. The Client/Server Model  Two Tier Web Based Model Web-based Software Development

  6. Three Tier Web Based Model Web-based Software Development

  7. Multi-Tier Web Based Model Various configurations? • Multiple Databases • Distributed Databases • Multiple application instances • Web server farm Web-based Software Development

  8. Sample Web Based Applications • dynamic web pages – interactive i/o • multimedia presentations • Web based multi-player games • access to remote databases • connectivity to legacy computer systems • front end of a transaction application • intranet applications • scientific simulation and visualization Web-based Software Development

  9. Sample Web Based Applications- scientific simulation and visualization Web-based Software Development

  10. Representative Web technology - Client Side Development • Interpreted or executed by the client (that is, the Web browser). • Note: Web pages are originally stored on the Web server. Web-based Software Development

  11. Representative Web technology - Client Side Development •  Issues with client side scripting • Inconsistent support across the Web browsers • Source exposed to the viewer • Security • Awkward connectivity to back-end (e.g., ODBC) Web-based Software Development

  12. Representative Web technology - Server Side Development • Interpreted or executed by the server side applications. • The result is then sent back to the Web browser. Web-based Software Development

  13. Representative Web technology  Server Side Technologies • Common Gateway Interface (CGI) • Active Server Pages (ASP) • Java Servlets • Java Server Pages (JSP) • Distributed Components-Based Technology ( CORBA, DCOM, EJB, RMI, … ) Web-based Software Development

  14. Representative Web technology  Database Connections • JDBC: Java Database Connectivity • ODBC: Open Database Connectivity • OLE-DB • ADO: ActiveX Data Objects Web-based Software Development

  15. Representative Web technology Web-based Software Development

  16. Follow-ups: • Read MSS Chapters 1 & 2 (part of Assignment 1) • Next: • Overview of cryptography Web-based Software Development

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