Companies and individuals produce numerous tabular data. The objective of this position paper is to draw up the challenges posed by the automatic integration of data in the form of tables so that they can be cross-analyzed. We provide a first automatic solution for the integration of such tabular data to allow On-Line Analysis Processing. To fulfill this task, features of tabular data is analyzed and the challenges of automatic multidimensional schema generation should be addressed. Hence, we propose a typology of tabular data and a automatic process based on different steps to integrate one or more data sources.