The paper contextualizes the POSTDATA project, it presents it as it is now, and talks about the starting point for the development of the semantic model that is undergoing now. It shows in a very generic way the path that the Work Package 1 is taking to achieve a final common data model for all repertoires? stakeholders of the project. In short, POSTDATA team is using a process of reverse engineering: 1) analysing the Websites of all repertoires to elicit the functional requirements of each database using the UseCase modelling technique, and also, when possible, 2) studying the relational models or XML models of the databases and building the conceptual models of all databases. As soon as all this tasks will be completed, together with some more information from other stakeholders and final users of repertoires, the POSTDATA team will define a data model for the community of European Poetry.