Nowadays, more and more enterprises are using Enterprise Resource Planning (EPR) systems that can also be used to plan and control the development of new products. In order to obtain a project schedule, certain parameters (e.g. duration) have to be specified in an ERP system. These parameters can be defined by the employees according to their knowledge, or can be estimated on the basis of data from previously completed projects. This paper investigates using an ERP database to identify those variables that have a significant influence on the duration of a project phase. In the paper, a model of knowledge discovery from an ERP database is proposed. The presented method contains four stages of the knowledge discovery process such as data selection, data transformation, data mining and interpretation of patterns in the context of new product development. Among data mining techniques, a fuzzy neural system is chosen to seek relationships on the basis of data from completed projects stored in an ERP system.
 Bazsova B. - Use of Attis software tool in education [in] Proceedings of the 10th International Conference on Strategic Management and its Support by Information Systems, pp. 23-34, VSB - Technical University of Ostrava 2013.
 Banaszak Z., Zaremba M., Muszyński W. - Constraint programming for project-driven manufacturing [in] Int. J. Production Economics, pp. 463-475, Vol. 120, 2009.
 Bocewicz G., Banaszak Z. - Declarative approach to cyclic steady state space refinement: periodic process scheduling [in] The International Journal of Advanced Manufacturing Technology, Springer, pp. 137-155, Vol. 67, Issue 1-4, 2013.
 Cheng M.Y., Tsai H.C., Sudjono E. - Evolutionary fuzzy hybrid neural network for project cash flow control [in] Engineering Applications of Artificial Intelligence, pp. 604-613, Vol. 23, 2010.
 Chien S.C., Wang T.Y., Lin S.L. - Application of neuro-fuzzy networks to forecast innovation performance [in] Expert Systems with Applications, pp. 1086-1095, Vol. 37, 2010.
 Davenport T. - Putting the enterprise into the enterprise system [in] Harvard Business Review, pp. 121-131, July-August 1998.
 Doskočil R., Smolíková L. - Knowledge management as a support of project management [in] Knowledge for Market Use 2012, Societas Scientiarum Olomucensis II, pp. 40-48, Olomouc 2012.
 Fayyad U., Piatetsky-Shapiro G., Smith P. - From Data Mining to Knowledge Discovery in Databases. [in] American Association for Artificial Intelligence, pp. 37-54, Fall 1996.
 Han J., Kamber M. - Data Mining. Concepts and Techniques. 2nd edition, Morgan Kaufmann Publishers, San Francisco 2006.
 Imtiaz A., Kibria M.G. - Modules to optimize the performance of an ERP based integrated information system. IEEE International Conference on Informatics, Electronics & Vision, pp. 598-601, 2012.
 Kormancová G. - Project financing in Slovak companies [in] European Scientific Journal, University of the Azores, Portugal, Special edition N. 1, pp. 367-370, June 2013.
 Lis M. - Zarządzanie portfelem projektów jako element strategii oraz sposób zarządzania w organizacji. Wydawnictwo Akademii Techniczno- Humanistycznej, pp. 126-139, Bielsko Biała 2010.
 Marban O., Mariscal G., Segovia J. - A data mining & knowledge discovery process model [in] Data Mining and Knowledge Discovery in Real Life Applications, I-Tech,Vienna 2009.
 May J., Dhillon G., Caldeira M. - Defining valuebased objectives for ERP systems planning [in] Decision Support Systems, pp. 98-109, Vol. 55, 2013.
 Relich M. - A decision support system for alternative project choice based on fuzzy neural networks [in] Management and Production Engineering Review, pp. 46-54, Vol. 1, No. 4, 2010.
 Relich M. - Project prototyping with application of CP-based approach [in] Management, pp. 364-377, Vol. 15, No. 2, 2011.
 Relich M., Banaszak Z. - Reference model of project prototyping problem [in] Foundations of Management - International Journal, pp. 33-46, Vol. 3, No. 1, 2011.
 Relich M. - Fuzzy project scheduling using constraint programming [in] Applied Computer Science, pp. 3-16, Vol. 9, No. 1, 2013.
 Rostański M. - Business process analysis with the higher education institution example [in] Proceedings of the 10th International Conference on Strategic Management and its Support by Information Systems, pp. 173-182, VSB - Technical University of Ostrava 2013.
 Samáková J., Šujanová J. - Project management certification approaches in Slovak industry enterprises [in] Efficiency and Responsibility in Education 2013: proceedings of the 10th International Conference, pp. 542-549, Czech University of Life Sciences Prague 2013.
 Samáková J., Šujanová J., Koltnerová K. - Project communication management in industrial enterprises [at] Proceedings of the 7th European Conference on Information Systems Management and Evaluation, pp. 155-163, University of Gdańsk 2013.
 Sikora M., Borowski Z., Majchrzak M. - Zintegrowane systemy informatyczne w organizacji gospodarki magazynowej [in] Logistyka No. 2, 2012.
 Sitek P., Wikarek J. - A declarative framework for constrained search problems [in] New Frontiers in Applied Artificial Intelligence, Lecture Notes in Artificial Intelligence, Nguyen, N.T., et al. (Eds.), Vol. 5027, Springer-Verlag, Berlin- Heidelberg, pp. 728-737, 2008.
 Zeng J., An M., Smith N.J. - Application of a fuzzy based decision making methodology to construction project risk assessment [in] International Journal of Project Management, pp. 589-600, Vol. 25, 2007