1. A method to improve a coverage of a plurality of classifications relating a plurality of terms in a glossary to a set of values in a reference data management system, each of the plurality of classifications defining a set of valid values for each classified term, the method comprising: identifying a first classification, of the plurality of classifications in the glossary, that relates a first term in the glossary to a first set of values in the reference data management system; detecting a relationship between the first set of values and a second set of values in the reference data management system; and upon determining that a relevance score for a first value from the second set of values exceeds a predefined threshold, identifying the first value to be classified with the first term in the glossary by operation of one or more computer processors, wherein the glossary is configured to create a second classification between the first term and the first value.