Abstract
To address the supply and the payment jointly in different socio-economic contexts, the sugarcane industry wants to gather two existing information systems. MAGI ® and MODECO being from different disciplinary background, they experience a different way the functioning of the sugar industry. The question that arises is that of the impact of this difference on merging databases. The purpose of this paper is to relate the experience of building the software platform PEMPA® and in particular deal with database merging using the ontology's alignment.