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Chapter 27. Understanding Universal Data... > In the Real World—Struggling with AD...

In the Real World—Struggling with ADO

"Everything has to be somewhere" is a popular corollary of the Law of Conservation of Matter, so just about everything you need to know about ADO is concentrated in this chapter. The problem with this "laundry list" approach to describing a new set of data-related objects is that readers are likely to doze off in mid-chapter. If you've gotten this far (and have at least scanned the intervening code and tables), you probably surmised that ADO is more than just a replacement for DAO—it's an entirely new approach to database connectivity.

Why Learn ADO?

The quick answer is for Web-based database applications. Microsoft designed OLE DB and ADO expressly for HTML- and XML-based applications, such as DAP—the subject of Chapter 18, "Designing Data Access Pages." You can use VBScript or JScript (Microsoft's variant of JavaScript) to open and manipulate ADO Connection, Command, and Recordset objects on Web pages. With DAO, you're stuck with conventional Access applications that require users to have a copy of Office 2000 or you to have the Microsoft Office 2000 Developer Edition (MOD) so you can supply run-time versions of your Access 2000 applications.


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