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9: Databases
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Many commercial web sites are data driven and use the web to enable customers to complete transactions online The heart of a data-driven web site is the database that contains account information, product information, and other data that is necessary for a transaction This is the first of four chapters that teach you how to create a data-driven web site In this chapter, you'll learn database concepts and how to design a database for your application
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10: Interacting with Databases
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Your ASPNET application must use a series of routines behind the scenes that, among other things, links your web site to a database This connection enables you to store information in the database and retrieve information from the database, which can be incorporated directly into your web page In this chapter, you'll learn how to create an ADONET connection that becomes your pipeline into popular commercial database management software (DBMS), such as Microsoft SQL Server, Oracle database server, and Microsoft Access You'll also learn how to write simple SQL statements in a query that direct the DBMS to perform tasks that are commonly used in many commercial web sites
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11: SQL
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Real world ASPNET web applications require sophisticated queries to retrieve information from multiple tables, perform complex calculations, and efficiently organize information so it can be displayed on a web page In the previous chapter you learned how to connect your application to database management software and how to request and store data in a database by writing simple queries This chapter focuses on writing sophisticated queries that perform commonly used tasks in commercial applications
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ASPNET 20 Demystified
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12: Binding Data to Controls
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An efficient way to streamline your data-driven ASPNET application is to link data directly to web controls so data automatically appears every time a web page is displayed For many applications, the data is information stored in a database In this chapter, you'll learn how to bind data contained in a database to a web control and then use that data and web control in your application
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Appendixes
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This book also includes a final exam (Appendix A) and final exam answers (Appendix B) The questions in the final exam are practical and are drawn from all chapters in the book Take the exam when you have finished all the chapters and have completed all the quizzes
CHAPTER
An Inside Look a t AS P N ET
Scratch the surface of an e-commerce web site and you ll be surprised at what you won t find-web pages Few web pages are stored in files on an e-commerce web server, because a program generates nearly all web pages that visitors see Programs also respond to requests visitors make, such as to display their account status and to process an order And programs are used to personalize web pages Web pages you build are static web pages, since their content stays the same once you save the pages to your web server Web pages generated by a program are dynamic web pages because the program can tailor the content of the web pages to meet the needs of each visitor to the web site You can make your web site come alive with a professional flare by using ASP NET to create dynamic web pages that individually respond to each request made by visitors to your site You ll learn everything you need to know to put ASPNET to work for you throughout this book, beginning with an introduction to ASPNET in this chapter
ASPONET 20 Demystified
The Static over Static Web Pages
Before embarking on a journey into the world of ASPNET, let's quickly review how static web pages are used on a web site so that you can later appreciate the power of dynamic web pages A static web page is a web page whose content doesn't change after the developer saves the web page to the web server The web page simply remains the same until the developer replaces it with an updated static web page (Figure 1- 1) With one exception, static web pages are not tailored to each visitor, since every visitor to the web site sees exactly the same web page In order to personalize the content of the web page, the developer must know something about the visitor and then update and replace the existing web page on the web server Obviously, this is impossible to do for every visitor The exception is to personalize a web page by using a client-side script such as JavaScript that is incorporated into the web page JavaScript is a limited objectoriented programming language that developers use to enhance the capabilities of HTML A developer uses JavaScript to create portions of the web page dynamically after the browser loads the web page For example, the visitor's name might have been saved to a cookie during a previous visit to the web site On the next visit, the JavaScript reads the cookie and then uses the visitor's name to write a personal greeting on the web page Developers also use JavaScript to dynamically modify an HTML form while the visitor is interacting with the form For example, the visitor might be prompted to enter a telephone number onto the form The JavaScript then properly formats the telephone number It is important to remember that scripts written in JavaScript or a similar scripting language run on the visitor's computer ASPNET runs on the web server, which gives developers far-reaching capabilities to tie together corporate databases and
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