ADO.NET Design Goals
Before digging into how ADO.NET has been architected, let's take a brief look at the design goals, which provides insight into the final implementation. To that end, ADO.NET was designed with five primary goals in mind.
It Efficiently Supports a Multi-Tiered Programming Model
As mentioned earlier, one of the key shifts in software development in the past several years has been to a multi-tier (or n-tier) programming model. In that model, data is read from a data source, disconnected from the source, and moved across tiers. If you think of those tiers as not simply machines within an organization, but as Web sites that span organizations (as with XML Web Services), it becomes immediately apparent that the disconnected record ...
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