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Written by Administrator
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Tuesday, 03 March 2009 12:20 |
Initial SAP release was known as SAP R/2. This release was designed to work on mainframe computers.
Mainframe computing is a two tier architecture.
The database and application sits on the mainframe computer and users access the application through terminals.
Terminal is simply a dumb box without a CPU; keyboard and a monitor is attached to this box.
In comparison to three-tiered architecture you can think mainframe as applications server and a database server combined and a terminal as a presentation layer.
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