1. Web Design and Development for E-Business By Jensen J. Zhao Copyright 2003 Prentice Hall, Inc. Web Design and Development for E-Business Jensen J. Zhao

2. Quit 9.2 Chapter 9 Objectives  Design a Web-based client/server application for checking class registration  Develop a database for student class registration  Create a system DSN on the Web server  Understand VBScript programming in ASP  Write the application with HTML and ASP  Post, test and manage the application

3. Quit 9.3 Five Design Issues Needs Assessment Security Design Server Installation Database Design Client/Server Interface Design

4. Quit 9.4 Needs Assessment  Purpose: develop an application that will provide students with access to registration information without time and distance barriers  Needs: Dynamically connected to school’s database Dynamically connected to school’s database Students can view or print their registration status Students can view or print their registration status

5. Quit 9.5 Security Design  Purpose: keep student information private and confidential  Needs: Require user name and password for access Require user name and password for access Use individual students IDs Use individual students IDs

6. Quit 9.6 Server Installation  Purpose: create a local intranet to connect to the Internet  Needs: Install a Web server on your computer Install a Web server on your computer Create a file folder in the personal Web server directory called studentservice Create a file folder in the personal Web server directory called studentservice studentservice will host all files for this application studentservice will host all files for this application

7. Quit 9.7 Database Design  Purpose: gather information from and send information to users in a secure manner  Needs: Develop and install a Web-enabled database Develop and install a Web-enabled database Create student.mdb database file with two data tables Create student.mdb database file with two data tables User – keeps user name and passwords User – keeps user name and passwords Student – stores campus registration information Student – stores campus registration information Create a system DSN Create a system DSN

8. Quit 9.8 Interface Design  Purpose: allow students to access secure registration information on the Web from any Internet- connected client computer  Needs: Login security page Login security page Check1.ASP file Check1.ASP file Request.htm file Request.htm file Results.asp file Results.asp file

9. Quit 9.9 Summary of Files Needed Save in the folder of the Web server Save in the studentservice folder of the Web server student.mdb Web-enabled database file login.htm Login security page request.htm Fill-in form User and PW check1.asp Security check file results.asp Enter student ID

10. Quit 9.10 VBScript in ASP Files  Components of ASP files  VBScript fundamentals  Basic SQL statements

11. Quit 9.11 Components of ASP Files  Language-independent application technology  Created with a combination of: HTML tags HTML tags Text Text Script Script SQL statements SQL statements  Delimiters  Delimiters  Server-side script  Saved with.ASP extension

12. Quit 9.12 VBScript Fundamentals  Primary default scripting language of ASP  Member of the Visual Basic family  Fundamentals: Variables Variables Constants Constants Operators Operators Statements Statements

13. Quit 9.13 VBScript Variables  Symbolic name  Use to declare or store information that may change during run time of script  Stores user name and password variables

14. Quit 9.14 VBScript Constants  A number or string of text that never changes  Intrinsic constants Color Color Comparison Comparison Date and time Date and time  Create constants with the const statement

15. Quit 9.15 VBScript Operators  Types Arithmetic – calculation Arithmetic – calculation Comparison Comparison Logical Logical Concatenation Concatenation  Precedence of operators Order of evaluation: arithmetic, comparison, logical Order of evaluation: arithmetic, comparison, logical Comparison operators have equal precedence (evaluated left to right) Comparison operators have equal precedence (evaluated left to right) Arithmetic evaluation order ^ * / + - Arithmetic evaluation order ^ * / + - Parentheses override precedence Parentheses override precedence Inside parentheses performed first Inside parentheses performed first

16. Quit 9.16 VBScript Statements  Set statement Assigns object reference to a variable  If... Then... Else statement Conditional Executes if a specified condition is true or false  Do... Loop statement Runs a block of statements repeatedly while a condition is true or until a condition becomes true  For Each... Next statement Runs a group of statements repeatedly for each item in a collection  Date/Time function  Comments

17. Quit 9.17 Basic SQL Statements  Enable client/server application to communicate with databases  Select statement Used to retrieve records and fields from a data table Used to retrieve records and fields from a data table  Where clause Used to limit records selection Used to limit records selection

18. Quit 9.18 Chapter 9 Summary  Five Design Issues  Summary of Files Needed  VBScript in ASP Files  Components of ASP Files  VBScript Fundamentals VBScript Variables VBScript Variables VBScript Constants VBScript Constants VBScript Operators VBScript Operators VBScript Statements VBScript Statements  Basic SQL Statements

19. Web Design and Development for E-Business By Jensen J. Zhao Copyright 2003 Prentice Hall, Inc. Developing a Web-Based Application for Student Class Registration The End