This lecture presents the key concepts related to web application design. In this chapter, the following content will be discussed: Patterns, effective design patterns; describing patterns; types of patterns; design tasks; user interface design patterns. | Web Application Design SEII-Lecture 14 Dr. Muzafar Khan Assistant Professor Department of Computer Science CIIT, Islamabad. 1 Recap Patterns, effective design patterns Describing patterns Types of patterns Architecture, data, component, interface design, and webapp patterns Creational, structural, and behavioral patterns Design tasks User interface design patterns 2 WebApp Quality [1/2] Olsina et al. criteria, 1999 Usability Global site understandability Online feedback and help features Interface and aesthetic features Special features Functionality Searching and retrieving capability Navigation and browsing features Application domain-related features 3 WebApp Quality [2/2] Reliability Correct link processing Error recovery User input validation and recovery Efficiency Response time performance Page generation speed Graphics generation speed Maintainability Ease of correction Adaptability Extensibility 4 WebApp Quality Offutt (2002) proposed Security Sensitive information Availability 24/7/365 Different web browsers Scalability Support for more users Time-to-market Business point of view 5 Content Quality [1/2] Tillman (2000) criteria Can the scope and depth of content be easily determined to ensure that it meets the user's needs? Can the background and authority of the content's authors be easily identified? Is it possible to determine the currency of the content, the last update, and what was updated? Are the content and its location stable (., will they remain at the referenced URL)? 6 Content Quality [2/2] Further considerations Is content credible? Is content unique? That is, does the webApp provide some unique benefit to those who use it? Is content valuable to the targeted user community? Is content well organized? Indexed? Easily accessible? 7 Design Goals of WebApp [1/2] Simplicity “all things in moderation” Informative but compact Sensible use of colors Simple navigation Consistency Text formatting, font style, color scheme Identity Specific to . | Web Application Design SEII-Lecture 14 Dr. Muzafar Khan Assistant Professor Department of Computer Science CIIT, Islamabad. 1 Recap Patterns, effective design patterns Describing patterns Types of patterns Architecture, data, component, interface design, and webapp patterns Creational, structural, and behavioral patterns Design tasks User interface design patterns 2 WebApp Quality [1/2] Olsina et al. criteria, 1999 Usability Global site understandability Online feedback and help features Interface and aesthetic features Special features Functionality Searching and retrieving capability Navigation and browsing features Application domain-related features 3 WebApp Quality [2/2] Reliability Correct link processing Error recovery User input validation and recovery Efficiency Response time performance Page generation speed Graphics generation speed Maintainability Ease of correction Adaptability Extensibility 4 WebApp Quality Offutt (2002) proposed Security Sensitive information .
