ADO Quick Review
Figure 10.1 shows an overview of the Microsoft ADO model. Unlike the DAO model, the ADO object model is not hierarchical.
Figure 10.1. The ADO object model.
The Connection Object
The Connection object defines a session for a user for a data source. Although the ADO object model is not considered to be hierarchical, the Connection object is considered the highest-level ADO object. After you have established a Connection object, you can use it with multiple recordsets. This improves performance and greatly simplifies your programming code.
A Connection object must be declared before it is used. The declaration looks like this:
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