This illustration depicts two Web browsers connecting to an Oracle database in two different ways. The database server shows a communication stack that includes two layers. From the top down, the stack is constructed with the following layers:

The database server is also configured to support HTTP.

One first Web browser uses the HTTP protocol to connect to the Oracle Net layer on the database server. The second Web browser shows a communication stack. From the top down, the stack is constructed with the following layers:

This browser uses the TCP/IP protocol to connect to the Oracle Net layer on the database.