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SAP R/3 gained immense popularity as it consisted of a suite of tightly integrated, large-scale business applications. In early 1990’s, SAP released SAP R/3 system, which followed a 3-tier architecture i.e separate presentation layer, separate application layer and a separate database layer.a separate presentation layer and and an application with database layer Later, SAP introduced the R/2 system, which followed a two-tier architecture i.e.
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It was primarily a financial accounting solution.
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