INSC 40803

1
INSC 40803

• Basic Enterprise Architectures

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Centralized Computing

• Server (Mainframe)
• Data services
• Application logic
• Interface logic

• Terminals
• User interaction

3
Client/Server Computing

• Server
• Data services
• Application logic (thin client)

• Clients
• User interaction
• Interface logic
• Application logic (thick client)

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3-Tier Client/Server

• Data Server
• Data services

• Clients
• User interaction
• Interface logic

• Application Servers (Middleware)
• Application logic

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n-Tier Client/Server

• Data Server
• Data services

• Terminals
• User interaction

• Application Servers (Middleware)
• Application logic

• Web Servers
• Interface logic

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INSC 40803

• Application Protocols

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Applications and Protocols

• World Wide Web
• HTTP
• HTML, XML, etc.
• Email
• SMTP, POP, IMAP, MIME
• Other Applications/Protocols
• Telnet
• FTP
• IM

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End of Lecture