The article is an overview of the capabilities of the ADESSE corpus as a resource that allows to optimize the research process in terms of finding empirical material, testing theoretical propositions and verifying results. The specific features of this corpus are evident due to its name, which clearly indicates that it is a database of diathesis types and semantic-syntactic schemes of the Spanish sentence. First of all, it is addressed to specialists dealing with the syntax of Ibero-Romance languages - still the least studied area not only in domestic Spanish studies. Despite the unavoidable imprecisions and vulnerabilities in projects of such scale, the ADESSE database surpasses similar corpus resources both in the number of restrictive criteria when forming a search query, and in the convenience of the interface and the set of filters when working with concordance.