1. A method of retrieving data from a database, the method comprising: receiving, from a user, a search request comprising search keywords for a set of data in at least one database; performing, in response to receiving the search request from the user, an ontology query over at least one ontology associated with at least one database resulting in an ontological dataset associated with the search request, wherein the ontological dataset comprises at least one of a set of synonyms, a set of hypernyms, and a set of hyponyms associated with the search request; performing, in response to performing the ontology query, a data query over data in the at least one database using a union of the ontological dataset with the search keywords in the search request; and returning the set of data to the user based on the data query that has been performed.