By David Sussman
* this can be the main definitive booklet at the topic and has been the top reference on ADO seeing that its first release.
* Covers all types of ADO.
* Covers comparable applied sciences, comparable to ADOX and ADOMD.
* Supported by way of on-line samples in a number of languages.
* Examines functionality points of ADO.
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MSIDXS Microsoft OLE DB Provider for Index Server: allows connections to be established to Microsoft Index Server. ADSDSOObject OLE DB Provider for Microsoft Directory Services: allows connections to be established to Directory Services such as the Windows 2000 Active Directory and the Windows NT 4 Directory Services. MSDataShape Microsoft OLE DB Data Shape Provider: provides the ability to create hierarchical recordsets. MSPersist Microsoft OLE DB Persistence Provider: allows recordsets to be saved or persisted and later reconstructed.
Recordset This creates the object reference immediately, but the object is not instantiated until the first property or method is called. This means that instead of being instantiated when declared, the object is instantiated later in the code-which can lead to debugging problems. Recordset This creates a variable of the type Recordset, and then the Set line instantiates the object. Recordset') After an object has been created, invoking the methods and properties is extremely simple. For example: objRs .
However, the samples should be easy to translate into your favorite language. 18 What Is ADO? com/library/techart! msdn_adorosest. htm. com/. Creating Objects Creating the ADO objects is one area where pseudo-code doesn't really work too well. Significant differences exist, even between such apparently similar languages as Visual Basic and VB Script. Therefore, this section is devoted to the act of creating objects. I describe in some detail how it's done in each of the five languages where I think ADO will have most impact.