                   MARIANTEFAN NEICU 1 , GEORGE SAVII 2 , MARIUSCĂLIN BENEA 3 1 Technical University of Timi(oara, Faculty of Automation and Computer Science Vasile Pârvan 2, 300223 Timi(oara 2 Technical University of Timi(oara, Mechanical Engineering Faculty Mihai Viteazu 1, 300222 Timi(oara 3 Technical University of Timi(oara, Faculty of Engineering of Hunedoara RevolutŃei 5, 331128 Hunedoara ROMANIA neicu.marian@yahoo.com, george.savii@mec.upt.ro, mcbenea@yahoo.fr Abstract:  The paper presents a method of validation of the informatics systems designed for the business environment, through their implementation and use in an exercise company. As opposed to the audit of administration informatics systems or the wellknown software testing methods, the method we propose evaluates the manner in which the software applications adapt to the integral pass through an information processing flow, corresponding to some basic functions of the company (supply, production, distribution, etc.). In this manner we obtain complete and good quality results, at reduced costs of the evaluation process. KeyWords:  Development informatics systems for business, Simulated company, Software testing.   Both during the development of an informatics system, and especially after it has been elaborated, the control of its performances represents a high importance activity [1]. The system is a group of interconnected elements which interact for a purpose: human resources, hardware, software and data [2]. The model is a representation of a group of objects in a different form than that of the objects themselves. The models used in the informatics systems designed for the business environment have the following structure [3]:  Introduction of data – which allow the users of the model to introduce the information;  A logical sequence – in which there is the specification how the information introduced are transformed in result information;  Report generation – which allows the user to arrange the processed information under the most useful form. Simulation is the process through which a real system is conceived and experiments are made with that model for the purpose of understanding the functioning of the system and/or the evaluation of the different functioning strategies (Fig. 1) [4]. Fig.1 The place of simulation in system analysis The simulated company can be defined as a practical preparation instrument in the field of informational process which uses procedures and means identical with those from the real company, with the exception of money and products, which are simulated. The simulated company, before being a very wellendowed laboratory, is a pulse, a live organism, a concept which modifies the traditional instruction system. The simulated company is built based on the IT systems, which facilitates fast data transfers, Recent Researches in System Science ISBN: 978-1-61804-023-7 180