ADO ActiveX data objects by Jason T. Roff PDF

By Jason T. Roff

ISBN-10: 1565924150

ISBN-13: 9781565924154

This ebook is a one-stop advisor to ADO, the common information entry answer from Microsoft that enables quick access to facts from a number of codecs and structures. It contains chapters at the Connection, Recordset, box, and Command items and the houses assortment; ADO structure, info shaping, and the ADO occasion version; short introductions to RDS, ADO.NET, and SQL; and a finished alphabetic connection with each ADO item, approach, estate, and occasion.

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Additional info for ADO ActiveX data objects

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Example 3-1. Height End Sub A lot of this information will not make much sense to you now, but it will start to as you begin to learn how to use ActiveX Data Objects from the rest of the chapters in this book. The important technique to notice from this example is how the ADO objects are created in the beginning of the code example, and how the ADO objects are removed at the end of the code example. 2 Accessing ADO with Visual C++ Visual C++ is a much more difficult language and environment with which to develop applications for ActiveX Data Objects.

Although this book does not go into ASP in detail,[1] a brief explanation of the technology is needed to understand how to develop VBScript code that uses ActiveX Data Objects. [1] For more detailed information, see ASP in a Nutshell, Second Edition by A. Keyton Weissinger (O'Reilly & Associates, 2000), which goes into depth about how to incorporate ADO into your ASP pages. In addition, Developing ASP Components by Shelley Powers (O'Reilly & Associates, 1999) covers accessing ADO from Visual Basic and Visual J++, discussing how to create an OLE DB simple data provider.

The Connection object's object model In order to access data from any source, a connection for that source must first be established. ADO uses the Connection object to accomplish this. The Connection object uses information that you provide to establish a unique connection to a particular OLE DB data source. The standard information that a Connection object accepts includes filenames, data-provider names, usernames, and passwords. If your particular data provider needs additional information, this information can be passed from the Connection object directly to your data provider.

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