Chapter 11 Analysis and Design. Learning objectives. Summarize approaches for analysing requirements for e-business systems Identify key elements of approaches to improve the interface design and security design of e-commerce systems . Issues for managers.
‘the automation of a business process, in whole or part during which documents, information or tasks are passed from one participant to another for action, according to a set of procedural rules.’
Figure 11.1 An example task decomposition for an estate agency
Source: Chaffey (1998)
Figure 11.2 Symbols used for flow process charts
Figure 11.3Flow process chart showing the main operations performed by users when working using workflow software
Figure 11.5 Generic B2C ER diagram
Figure 11.6 Three-tier client server in an e-business environment
Figure 11.7 E-business architecture for The B2C Company
‘Unless a web site meets the needs of the intended users it will not meet the needs of the organization providing the web site.
Web site development should be user-centred, evaluating the evolving design against user requirements.’
Actors are typically application users such as customers and employers also other systems.
The sequence of transactions between an actor and a system that support the activities of the actor.
See Figure 11.8.
See Figure 11.9 for a detailed scenario.
Figure 11.8 Relationship between actors and use-cases for The B2C Company, sell-side e-commerce site
Figure 11.9 Primary use-case scenario for an entire e-commerce purchase cycle
Figure 11.10 Primary scenario for the Register use-cases for The B2C Company
Figure 11.11 Clear user scenario options at the RS Components site (www.rswww.com)
I want to...
I want to...
I want to...Customer scenarios and service quality
Patricia Seybold, The Customer Revolution
Covered by the
eight principles that
‘Users spend most of their time on other sites. This means that users prefer your site to work the same way as all the other sites they already know… Think Yahoo and Amazon. Think "shopping cart" and the silly little icon. Think blue text links’.
Jakob Nielsen - www.useit.com
– With Internet
– With company
– With products
– With web site
Aesthetics = Graphics + Colour + Style + Layout + Typography
According to Nielsen, need to establish:
Hofacker’s 5 stages of information processing
Figure 11.12Different types of audience for the web site of The B2B Company
Figure 11.13Different stages of user familiarity with the Internet
Source: The Netpoll Internet Usage curve, www.netpoll.net
Figure 11.15 (a) Narrow and deep and (b) broad and shallow organization
Figure 11.16Broad and shallow organization scheme for consumers at
Sainsbury’s to You Site (www.sainsburystoyou.co.uk) reproduced by kind
permission of Sainsbury’s Supermarkets Ltd
Figure 11.17 Broad organization schemes and professional style at Cisco.com
Figure 11.18 Public-key or asymmetric encryption
Figure 11.19 An example of the Secure Electronic Transaction (SET) standard
Figure 11.20The Open Buying on the Internet model for business-to-business e-commerce transactions