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In this paper it is presented an analysis regarding the modeling technique and design of a database realized by the developer in an ERP (enterprise resources planning) type integrated system, namely SAP (system application product). Such a database creation can be very easily realized using the system tools, and it is required when the SAP standard, although includes many such models, it is not enough to fulfill the user's requirements. We begin by identifying the main objects - business objects, and then we create a data model (structured object). We link this data model with a relational physical object in the system data director and then we test it.