Accessing data from a relational database by looking at its schema might be difficult, in particular when you are not the one that designed it. Typical questions are: what does these table and column names mean? What is this magic number corresponding to? Where is this kind of information located? In this talk, we will see how a Virtual Knowledge Graph (VKG) can make the content of a database significantly easier to access, without having to alter the database nor move and transform its data.