A first set of metadata may be received, via a network, which includes structural information about a first database. The structural information may be compared with one or more software signatures. Each software signature may include a software identity that is mapped to one or more associated database structure identities. A first match estimate may be generated based on the comparing of the structural information with the one or more software signatures. It may be inferred that the first database is likely included in a first software product based on the generating of the match estimate.