Java and Oracle : JDBC Layers and Connection types

I know no body does that, but I did it anyway :

I read through the JDBC connection types “http://download.oracle.com/javase/6/docs/technotes/guides/jdbc/getstart/intro.html#1019423” and thought I summarize the deferences between JDBC drivr types in this diagram:

JDBC Layers and types from Oracle drivers

Diagram Showing Layers of JDBC and Types with Oracle drivers

In short, there are 4 types of JDBC Connection, but only two are important from my experience:

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