Systems analysis and development CIS210 ch 14

CIS 210Systems Analysis and Development Week 8 Part II Designing Distributed and Internet Systems... Objectives • Upon completion of part II you will be able to: – Understand and be able

CIS 210

Systems Analysis and Development

Week 8 Part II

Designing Distributed and Internet Systems

Objectives

• Upon completion of part II you will be able to:

– Understand and be able to explain the concepts related to

client server architecture, local area networking, distributed databases and middleware

– Understand and be able to explain the concepts related to file server and client server environments

– Understand and be able to explain the concepts related to

distributed systems and their trade-offs

– Understand and be able to explain the concepts related to web site management and customer loyalty and trustworthiness

– Understand and be able to explain the concepts related to

online data, transaction processing, analytical processing and data warehousing

• Advances in Technology

– GUIs

– Networking

– Internet

• Opportunities

• Competitive Pressures

• Technologies Being Used

• Capabilities and Issues

Designing Distributed and Internet Systems

• The Process of Designing Distributed and Internet Systems

– More design issues

– More components

• Deliverables and Outcomes

– Description

– Data usage

– Business processes

– Contrasts of alternative IS architectures

Designing Distributed Systems

• Designing Systems for LANs

– Local area network

– File servers

• Manages file operations

• Limitations

– Excessive data movement – The need for a powerful client workstation – Decentralized data control

Designing Distributed Systems

• Designing Systems for Client/Server Architecture

– Client

• Managing the user interface

– Server

• Database storage

• Access

– Benefits

• Benefits leverage

• Reduced response time and network traffic

• GUI techniques

• Open systems

Designing Distributed Systems

• Choosing Between File Server and Client/Server

– Client/server

• Supports distribution of data

• Supports distribution of processing

• Advanced Forms of Client/Server Architectures

– Functions

• Data management

• Data presentation

• Data analysis

– Three tiered client/server

– Middleware

Designing Internet Systems

• Internet Design Fundamentals

– Standards drive the Internet

• BIND

• HTTP

• HTML

– Separating content and display

• XML

– Future evolution

• Thin client

• Wireless

– WAP – WML

Designing Internet Systems

• Site Consistency

– Cascading style sheets

• Simplify site maintenance

• Ensure consistency

– Extensible style language

• Separating style from content

• Methods for transforming

• Methods for formatting

– Other consistency issues

• Page and link titles

– Unique titles – Choose words carefully

Designing Internet Systems

• Design Issues Related to Site Management

– Customer loyalty and trustworthiness

• Design quality

• Disclosure

• Comprehensive, correct, current

• Connected to the Web

– Personalization

– Customization

– Web pages must live forever

• Bookmarks

• Links from other sites

• Search engines

• Added value

– System security

• Striking a balance

Designing Internet Systems

• Managing Online Data

– Context development

• Integration depth

• Organizational breadth

– Online transaction processing

– Online analytical processing

– Data warehousing

• Subject oriented

• Integrated

• Time-variant

• Non-volatile

– Enterprise data warehouse

– Data marts

• Process of designing distributed and Internet systems

• Designing systems for LANs

• Designing systems for client/server architecture

• Choosing between file/server and client/server

architecture

• Internet design fundamentals

• Providing site consistency

• Internet system design issues

• Managing online data