Web Application Design

Data –What data is available? –How do we store it or how is it stored in the DB? Schema Data types Etc. –Where is the data?

Web Application Design Define Use cases –What are the use cases? –What services are provided for each use case? Define generic and specific services –Accomplish tasks of use cases Define flow through use cases –Not pages, just flow of operations –Also flow of data This stage may force changes in data

Web Application Design Organize flow through use cases into pages –Be sensible, follow good examples Remember front controller design –Access to pages should flow through front controllers –Front controllers should Determine use Do any necessary filtering pass necessary arguments to view Design exception handling –Part of normal flow

Web Application Design Look and feel –Define a consistent look and feel –Banners, contents, etc. All views –Based on one view –Include appropriate elements Using info from front controller

Web Application Design Design Data Access Objects –Contain all database interaction Keep View and Controller as separate as possible –Design functions that interact with controller –View contains as little code as possible Function calls, etc. –Keep code away from web designer

Design Document Data Definition –Database schema –Data description Use Cases –Definition & Description Controller Functionality and API –Define interface to Data (Data Access Object) –Define interface to Views View & Data Flow –Define necessary page elements –Define data flow through pages –Define AJAX elements Layout

Project Team Building & Psychology Website Users take Personality Quizzes that are analyzed and then suggestions are made to team supervisors and users to improve team relationships, etc.

Data Definition Database Schema –Quiz Answers uid, specializer, harmonizer, organizer, and analyzer –Users uid, name, password, address, company, and whether or not this UID has administrative privileges. –Analyses uid, analysis Describe each –More detail –Type, –purpose, –use, etc | Field | Type | Null | Key | Default | Extra | | id | int(11) | NO | PRI | NULL | auto_increment | | username | varchar(255) | YES | | NULL | | | password | varchar(255) | YES | | NULL | | | name | varchar(255) | YES | | NULL | | | address | varchar(255) | YES | | NULL | | | phone | varchar(255) | YES | | NULL | | | company | varchar(255) | YES | | NULL | | | department | varchar(255) | YES | | NULL | | | role | varchar(255) | YES | | NULL | |

Use Cases Administrative Use Case Do Analysis –List users that need analysis –Record analysis Manage Users –Add, Modify, Delete Users Registered User Case Take Quiz See resulting analysis (upon later login) See group members analysis if group admin Guest User Register

Controller Functionality & API Data Access Object –getAnalysisList –getUsers –updateUser –recordAnalysis Front Controllers –Administrator Assure login as admin –User Assure login Next View State always contains userid, role, page id and link id Define full calls parameters, etc.

View & Data Flow Logged In? No Yes Home Page Username Passwd LoginMessage Registration Username Passwd Name, Address, Etc. About Us Session Info UserID UserRole Page Link Login Menu Admin Menu User Menu Guest Menu Quiz1 Quiz2 Quiz3 Quiz1 Ans Quiz2 Ans Quiz3 Ans Admin Users Do Analysis Take Quiz View Analysis Register UserRole = ? Take Quiz View Analysis Admin Users Do Analysis = AJAX

Layout