Download Chapter 3: Selecting the Technology

Chapter 3
Selecting the Technology
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Architecture
• Nodes
– End-notes (clients, servers)
– Intermediary nodes (traffic forwarding)
• Organizations
– Standards: Internet Engineering Task Force (IETF)
– Management: Internet Engineering Steering Group
(IESG)
– Policy and practice: Internet Society (ISOC)
– Web standard: World Wide Web Consortium (W3C)
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Protocol
• Internet Protocol Suite (IPS) or TCP/IP
• OSI/ISO
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Link layer
Network layer
Transport layer
Application layer
Link Layer
• Function
– Nodes connection to communication channels
• Protocol
– Fiber Distributed Data Interface (FDDI) for
Ethernet
– Point to Point Protocol (PPP) for token ring
Network Layer
• Function
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Data addressing
Transmission of information
Multi-casting
Audio and video broadcasts
• Protocol
– Internet Protocol (IP): IPv4 & IPv6
– Internet Group Management Protocol (IGMP)
• Domain Name System (DNS)
• Dynamic Host Configuration Protocol (DHCP)
IPv4 & IPv6
• Static Addressing IPv4
– Continuity
• Dynamic Addressing IPv6
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Network address translation (NAT)
Service more users
Easier configuration and management
Security
Quality of Service (QoS) for different priority
More services & applications
Transport Layer
• Function
– Delivery of data
– Complete and accurate data delivery
• Protocol
– Transmission Control Protocol (TCP)
– User Datagram Protocol (UDP)
Application Layer
• Function
– Delivery data from one application to another
one
• Protocol
– Hypertext Transfer Protocol (HTTP)
– Simple Mail Transfer Protocol (SMTP)
– File Transfer Protocol (FTP)
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
ATM
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Asynchonous Transfer Mode (ATM)
Multimedia communications
Constant-sized cells for repaid switching
Scalability bandwidth on demand
Fiber cabling
Back bond network
Standards and interoperability
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Selection Criteria
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Cost
Function & feature
Performance
Scalability
Availability and reliability
Management tool
Support
User’s need (business & customer)
Can you think more important selection criteria?
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Platform
• High-end commercial Unix Systems
• Low-cost Intel/Motorola-base operations
systems (Linux, Windows NT, MacOS X)
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Middleware
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Mail systems
Network management software
Security software
Payment software
Database management systems
Middleware
• Mail systems
– Private mail systems (within company)
– Public mail systems (ISP): service level agreements
(SLAs)
• Network management software requirements
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Multi-vendor environments
Multi-platform infrastructures
Central user interface, software, hardware management
Integrated functions: inventory, storage, scheduling and
security
– Integrated resource management: systems, networks,
desktops, database, and applications
– Anything else?
Middleware
• Security software requirements
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Confidentiality: privacy
Integrity: accuracy
Availability: continue access
Legitimate: authorized usage
Non-repudiation: digital signature & digital
certification
– Anything else?
Middleware
• Payment software requirements
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Convertible (different currency)
Privacy issue
Minimum transaction cost
Security
Flexible
• Micro-payment
• Consumer payment
• Business payment
– Anything else?
Middleware
• Database management systems
– Relational
– Object-oriented
Agenda
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools
Tools
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Image software
Web page editors
Content management
Graphic software
Sound software
Data warehousing & data mining
Enterprise resource planning
Call center
Tools
• Imaging technologies
– Static image formats: GIF, JPEG and PNG
– Dynamic image formats: QuickTime VR
• Web page editors requirements
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Code efficiency
Spell checker
Site management feature
Syntax checking
Anything else?
Tools
• Content management
– Generating, controlling and organization of web
content
• Graphic software
– Dynamic HTML (DHTML)
• Sound software
– Compress rate
– .wav, .aiff, .au
Tools
• Data warehousing
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De-normalized data
Cross-reference data
Data archive
Support decision making
• Enterprise Resource Planning (ERP)
– Digitizing business processing
– Coordinating demand, supply, and production
– Business analysis, new procedure, employee training
Tools
• Call center
– Solving customer problems
– A single point of contact providing convenience
and satisfaction
– Outsource or in-house
Shall we outsource call center for ebusiness?
Discussion Problem
• How does e-business implementation affect
your systems analysis and design process?
Points to Remember
• Internet Technology
– Architecture
– Protocol
– ATM
• IT for E-business
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Selection Criteria
Platform
Middleware
Tools